EPM9320RI208-20N - MAX 9000 CPLD 320 Macrocell 208-PQFP | Altera
N.º da peça: EPM9320RI208-20N ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
EPM9320RI208-20N Visão geral
A CPLD (Complex Programmable Logic Device) is a programmable logic IC that combines multiple programmable logic array blocks with a programmable interconnect matrix, allowing designers to implement custom digital logic functions without fabricating an ASIC. Within the programmable logic hierarchy, the CPLD sits between simple PLDs (PAL/GAL) and full FPGAs, offering non-volatile configuration, deterministic timing, and instant-on operation. The MAX 9000 family is built on Altera's third-generation Multiple Array MatriX (MAX) architecture, which uses EEPROM cells to retain configuration without an external boot device.
Key features of the EPM9320RI208-20N include 320 macrocells organized into Logic Array Blocks (LABs), 484 flip-flops, 5.0 V in-system programmability via JTAG, and four dedicated low-skew global input pins typically used for clock, clear, and output-enable distribution. The device supports 3.3 V or 5 V configurable I/O operation, making it suitable for mixed-voltage legacy systems. The industrial temperature grade (I suffix) covers -40C to +85C operation.
The MAX 9000 architecture routes signals through a programmable interconnect array that provides predictable, fixed pin-to-pin delays of 20 ns, eliminating the timing uncertainty found in SRAM-based FPGAs. This deterministic timing is critical for glue-logic replacement, bus interface, and state-machine applications where worst-case delay must be guaranteed.
Typical applications include legacy system glue logic, ISA/PCI bus interfaces, industrial control state machines, instrumentation front-end logic, and replacement of discrete 74-series logic. The 208-pin PQFP package provides up to 160 user I/O pins for wide bus interfaces.
When designing with this device, note that VCC must rise monotonically during power-up, and inputs may undershoot to -2.0 V or overshoot to 7.0 V for periods shorter than 20 ns under no-load conditions. The EPM9320RI208-20N is a mature, widely second-sourced part; verify lifecycle status before committing to new designs.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing engineers with a single reference for replacement and design-in decisions.
Alternativas drop-in para EPM9320RI208-20N — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com EPM9320RI208-20N (mesmo formato e footprint) — diferindo em Package, In-System Programmability, Usable Gates, Device Type, Macro Cells.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
EPM9320RI208-20
✅ Drop-In✓ Em estoque
$18.95 / unidade
Ver ficha técnica →EPM9320RI208-10N
✅ Drop-In✓ Em estoque
$27.2 / unidade
Ver ficha técnica →EPM9320RC208-20N
✅ Drop-In✓ Em estoque
Consulte o preço
Ver ficha técnica →EPM9320RC208-20
✅ Drop-In✓ Em estoque
$21.9 / unidade
Ver ficha técnica →EPM9320RC208-15N
✅ Drop-In✓ Em estoque
Consulte o preço
Ver ficha técnica →EPM9320RC208-15
✅ Drop-In✓ Em estoque
Consulte o preço
Ver ficha técnica →EPM9320RI208-20N Classificações máximas e características elétricas
| Device Family | MAX 9000 (EPM9320) |
| Logic Type | EEPROM-based Complex Programmable Logic Device (CPLD) |
| Macrocells | 320 |
| Flip-Flops | 484 |
| Propagation Delay (tPD) | 20 ns |
| Supply Voltage (VCC) | 5.0 V |
| I/O Voltage Tolerance | 3.3 V or 5 V configurable |
| Encapsulamento | 208-pin PQFP (Plastic Quad Flat Pack) |
| Package Lead Pitch | 0.500 mm |
| Number of Terminals | 208 |
| Faixa de temperatura de operação | -40C to +85C (Industrial) |
| In-System Programmability | Yes, 5.0 V ISP via JTAG |
| JTAG Interface | IEEE Std. 1149.1 compliant |
| Configuration Memory | EEPROM (non-volatile) |
| Dedicated Input Pins | 4 (low-skew global distribution) |
| Minimum DC Input on I/O Pins | -0.5 V |
| Minimum DC Input on Dedicated Inputs | -0.3 V |
| Input Undershoot/ Overshoot | -2.0 V / 7.0 V for <20 ns (no-load) |
| Tipo de montagem | Surface Mount |
Configuração de pinos do EPM9320RI208-20N
| Pino 1 | I/O — General-purpose I/O pin |
| Pino 2 | I/O — General-purpose I/O pin |
| Pino 3 | I/O — General-purpose I/O pin |
| Pino 4 | I/O — General-purpose I/O pin |
| Pino 5 | I/O — General-purpose I/O pin |
| Pino 6 | I/O — General-purpose I/O pin |
| Pino 7 | I/O — General-purpose I/O pin |
| Pino 8 | I/O — General-purpose I/O pin |
| Pino 9 | I/O — General-purpose I/O pin |
| Pino 10 | I/O — General-purpose I/O pin |
| Pino 11 | I/O — General-purpose I/O pin |
| Pino 12 | I/O — General-purpose I/O pin |
| Pino 13 | I/O — General-purpose I/O pin |
| Pino 14 | I/O — General-purpose I/O pin |
| Pino 15 | I/O — General-purpose I/O pin |
| Pino 16 | I/O — General-purpose I/O pin |
| Pino 17 | I/O — General-purpose I/O pin |
| Pino 18 | I/O — General-purpose I/O pin |
| Pino 19 | I/O — General-purpose I/O pin |
| Pino 20 | I/O — General-purpose I/O pin |
| Pino 21 | I/O — General-purpose I/O pin |
| Pino 22 | I/O — General-purpose I/O pin |
| Pino 23 | I/O — General-purpose I/O pin |
| Pino 24 | I/O — General-purpose I/O pin |
| Pino 25 | I/O — General-purpose I/O pin |
| Pino 26 | I/O — General-purpose I/O pin |
| Pino 27 | I/O — General-purpose I/O pin |
| Pino 28 | I/O — General-purpose I/O pin |
| Pino 29 | I/O — General-purpose I/O pin |
| Pino 30 | I/O — General-purpose I/O pin |
| Pino 31 | I/O — General-purpose I/O pin |
| Pino 32 | I/O — General-purpose I/O pin |
| Pino 33 | I/O — General-purpose I/O pin |
| Pino 34 | I/O — General-purpose I/O pin |
| Pino 35 | I/O — General-purpose I/O pin |
| Pino 36 | I/O — General-purpose I/O pin |
| Pino 37 | I/O — General-purpose I/O pin |
| Pino 38 | I/O — General-purpose I/O pin |
| Pino 39 | I/O — General-purpose I/O pin |
| Pino 40 | I/O — General-purpose I/O pin |
| Pino 41 | I/O — General-purpose I/O pin |
| Pino 42 | I/O — General-purpose I/O pin |
| Pino 43 | I/O — General-purpose I/O pin |
| Pino 44 | I/O — General-purpose I/O pin |
| Pino 45 | I/O — General-purpose I/O pin |
| Pino 46 | I/O — General-purpose I/O pin |
| Pino 47 | I/O — General-purpose I/O pin |
| Pino 48 | I/O — General-purpose I/O pin |
| Pino 49 | I/O — General-purpose I/O pin |
| Pino 50 | I/O — General-purpose I/O pin |
| Pino 51 | I/O — General-purpose I/O pin |
| Pino 52 | I/O — General-purpose I/O pin |
| Pino 53 | GND — Ground |
| Pino 54 | VCC — 5.0 V power supply |
| Pino 55 | I/O — General-purpose I/O pin |
| Pino 56 | I/O — General-purpose I/O pin |
| Pino 57 | I/O — General-purpose I/O pin |
| Pino 58 | I/O — General-purpose I/O pin |
| Pino 59 | I/O — General-purpose I/O pin |
| Pino 60 | I/O — General-purpose I/O pin |
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| Pino 62 | I/O — General-purpose I/O pin |
| Pino 63 | I/O — General-purpose I/O pin |
| Pino 64 | I/O — General-purpose I/O pin |
| Pino 65 | I/O — General-purpose I/O pin |
| Pino 66 | I/O — General-purpose I/O pin |
| Pino 67 | I/O — General-purpose I/O pin |
| Pino 68 | I/O — General-purpose I/O pin |
| Pino 69 | I/O — General-purpose I/O pin |
| Pino 70 | I/O — General-purpose I/O pin |
| Pino 71 | I/O — General-purpose I/O pin |
| Pino 72 | I/O — General-purpose I/O pin |
| Pino 73 | I/O — General-purpose I/O pin |
| Pino 74 | I/O — General-purpose I/O pin |
| Pino 75 | I/O — General-purpose I/O pin |
| Pino 76 | I/O — General-purpose I/O pin |
| Pino 77 | I/O — General-purpose I/O pin |
| Pino 78 | I/O — General-purpose I/O pin |
| Pino 79 | I/O — General-purpose I/O pin |
| Pino 80 | I/O — General-purpose I/O pin |
| Pino 81 | I/O — General-purpose I/O pin |
| Pino 82 | I/O — General-purpose I/O pin |
| Pino 83 | I/O — General-purpose I/O pin |
| Pino 84 | I/O — General-purpose I/O pin |
| Pino 85 | I/O — General-purpose I/O pin |
| Pino 86 | I/O — General-purpose I/O pin |
| Pino 87 | I/O — General-purpose I/O pin |
| Pino 88 | I/O — General-purpose I/O pin |
| Pino 89 | I/O — General-purpose I/O pin |
| Pino 90 | I/O — General-purpose I/O pin |
| Pino 91 | I/O — General-purpose I/O pin |
| Pino 92 | I/O — General-purpose I/O pin |
| Pino 93 | I/O — General-purpose I/O pin |
| Pino 94 | I/O — General-purpose I/O pin |
| Pino 95 | I/O — General-purpose I/O pin |
| Pino 96 | I/O — General-purpose I/O pin |
| Pino 97 | I/O — General-purpose I/O pin |
| Pino 98 | I/O — General-purpose I/O pin |
| Pino 99 | I/O — General-purpose I/O pin |
| Pino 100 | I/O — General-purpose I/O pin |
| Pino 101 | I/O — General-purpose I/O pin |
| Pino 102 | I/O — General-purpose I/O pin |
| Pino 103 | I/O — General-purpose I/O pin |
| Pino 104 | I/O — General-purpose I/O pin |
| Pino 105 | GND — Ground |
| Pino 106 | VCC — 5.0 V power supply |
| Pino 107 | I/O — General-purpose I/O pin |
| Pino 108 | I/O — General-purpose I/O pin |
| Pino 109 | I/O — General-purpose I/O pin |
| Pino 110 | I/O — General-purpose I/O pin |
| Pino 111 | I/O — General-purpose I/O pin |
| Pino 112 | I/O — General-purpose I/O pin |
| Pino 113 | I/O — General-purpose I/O pin |
| Pino 114 | I/O — General-purpose I/O pin |
| Pino 115 | I/O — General-purpose I/O pin |
| Pino 116 | I/O — General-purpose I/O pin |
| Pino 117 | I/O — General-purpose I/O pin |
| Pino 118 | I/O — General-purpose I/O pin |
| Pino 119 | I/O — General-purpose I/O pin |
| Pino 120 | I/O — General-purpose I/O pin |
| Pino 121 | I/O — General-purpose I/O pin |
| Pino 122 | I/O — General-purpose I/O pin |
| Pino 123 | I/O — General-purpose I/O pin |
| Pino 124 | I/O — General-purpose I/O pin |
| Pino 125 | I/O — General-purpose I/O pin |
| Pino 126 | I/O — General-purpose I/O pin |
| Pino 127 | I/O — General-purpose I/O pin |
| Pino 128 | I/O — General-purpose I/O pin |
| Pino 129 | I/O — General-purpose I/O pin |
| Pino 130 | I/O — General-purpose I/O pin |
| Pino 131 | I/O — General-purpose I/O pin |
| Pino 132 | I/O — General-purpose I/O pin |
| Pino 133 | I/O — General-purpose I/O pin |
| Pino 134 | I/O — General-purpose I/O pin |
| Pino 135 | I/O — General-purpose I/O pin |
| Pino 136 | I/O — General-purpose I/O pin |
| Pino 137 | I/O — General-purpose I/O pin |
| Pino 138 | I/O — General-purpose I/O pin |
| Pino 139 | I/O — General-purpose I/O pin |
| Pino 140 | I/O — General-purpose I/O pin |
| Pino 141 | I/O — General-purpose I/O pin |
| Pino 142 | I/O — General-purpose I/O pin |
| Pino 143 | I/O — General-purpose I/O pin |
| Pino 144 | I/O — General-purpose I/O pin |
| Pino 145 | I/O — General-purpose I/O pin |
| Pino 146 | I/O — General-purpose I/O pin |
| Pino 147 | I/O — General-purpose I/O pin |
| Pino 148 | I/O — General-purpose I/O pin |
| Pino 149 | I/O — General-purpose I/O pin |
| Pino 150 | I/O — General-purpose I/O pin |
| Pino 151 | I/O — General-purpose I/O pin |
| Pino 152 | I/O — General-purpose I/O pin |
| Pino 153 | I/O — General-purpose I/O pin |
| Pino 154 | I/O — General-purpose I/O pin |
| Pino 155 | I/O — General-purpose I/O pin |
| Pino 156 | I/O — General-purpose I/O pin |
| Pino 157 | GND — Ground |
| Pino 158 | VCC — 5.0 V power supply |
| Pino 159 | I/O — General-purpose I/O pin |
| Pino 160 | I/O — General-purpose I/O pin |
| Pino 161 | I/O — General-purpose I/O pin |
| Pino 162 | I/O — General-purpose I/O pin |
| Pino 163 | I/O — General-purpose I/O pin |
| Pino 164 | I/O — General-purpose I/O pin |
| Pino 165 | I/O — General-purpose I/O pin |
| Pino 166 | I/O — General-purpose I/O pin |
| Pino 167 | I/O — General-purpose I/O pin |
| Pino 168 | I/O — General-purpose I/O pin |
| Pino 169 | I/O — General-purpose I/O pin |
| Pino 170 | I/O — General-purpose I/O pin |
| Pino 171 | I/O — General-purpose I/O pin |
| Pino 172 | I/O — General-purpose I/O pin |
| Pino 173 | I/O — General-purpose I/O pin |
| Pino 174 | I/O — General-purpose I/O pin |
| Pino 175 | I/O — General-purpose I/O pin |
| Pino 176 | I/O — General-purpose I/O pin |
| Pino 177 | I/O — General-purpose I/O pin |
| Pino 178 | I/O — General-purpose I/O pin |
| Pino 179 | I/O — General-purpose I/O pin |
| Pino 180 | I/O — General-purpose I/O pin |
| Pino 181 | I/O — General-purpose I/O pin |
| Pino 182 | I/O — General-purpose I/O pin |
| Pino 183 | I/O — General-purpose I/O pin |
| Pino 184 | I/O — General-purpose I/O pin |
| Pino 185 | I/O — General-purpose I/O pin |
| Pino 186 | I/O — General-purpose I/O pin |
| Pino 187 | I/O — General-purpose I/O pin |
| Pino 188 | I/O — General-purpose I/O pin |
| Pino 189 | I/O — General-purpose I/O pin |
| Pino 190 | I/O — General-purpose I/O pin |
| Pino 191 | I/O — General-purpose I/O pin |
| Pino 192 | I/O — General-purpose I/O pin |
| Pino 193 | I/O — General-purpose I/O pin |
| Pino 194 | I/O — General-purpose I/O pin |
| Pino 195 | I/O — General-purpose I/O pin |
| Pino 196 | I/O — General-purpose I/O pin |
| Pino 197 | I/O — General-purpose I/O pin |
| Pino 198 | I/O — General-purpose I/O pin |
| Pino 199 | I/O — General-purpose I/O pin |
| Pino 200 | I/O — General-purpose I/O pin |
| Pino 201 | I/O — General-purpose I/O pin |
| Pino 202 | I/O — General-purpose I/O pin |
| Pino 203 | I/O — General-purpose I/O pin |
| Pino 204 | I/O — General-purpose I/O pin |
| Pino 205 | I/O — General-purpose I/O pin |
| Pino 206 | I/O — General-purpose I/O pin |
| Pino 207 | I/O — General-purpose I/O pin |
| Pino 208 | I/O — General-purpose I/O pin |
Aplicações típicas
EPM9320RI208-20N é adequado para 6 aplicaçãos: Legacy Glue Logic Replacement, Industrial Control State Machines, Bus Interface and Protocol Bridging, Instrumentation Front-End Logic, Telecommunications Line Card Control, Military and Aerospace Legacy Upgrades.
Legacy Glue Logic Replacement
The EPM9320RI208-20N is widely used to consolidate dozens of discrete 74-series logic ICs into a single 208-pin PQFP device. Its 320 macrocells and 484 flip-flops can absorb address decoding, bus arbitration, and control-signal generation that previously required multiple boards. The 20 ns pin-to-pin delay is deterministic and guaranteed, unlike SRAM-based FPGAs, so worst-case timing analysis remains straightforward. Because configuration is stored in on-chip EEPROM, the device is instant-on at power-up with no external boot PROM, which is critical for legacy systems that must not add a configuration delay. Designers typically map existing 74LS/74F logic equations directly into the MAX 9000 architecture using Altera's MAX+PLUS II toolchain, preserving the original timing budget while reducing board area and component count.
Recomendado
Industrial Control State Machines
The EPM9320RI208-20N is well suited to industrial control state machines because its industrial temperature rating of -40C to +85C covers factory-floor and outdoor environments. The 484 flip-flops allow complex multi-state sequencers to be implemented entirely on-chip, while the 20 ns propagation delay guarantees deterministic state-transition timing. The four dedicated low-skew input pins distribute global clock, clear, and output-enable signals across all Logic Array Blocks, minimizing clock skew in synchronous designs. EEPROM configuration means the state machine resumes its programmed behavior immediately after a power interruption, without the reconfiguration latency of SRAM-based devices. Typical implementations include conveyor sequencing, valve and actuator control, and safety interlock logic in PLC-adjacent subsystems.
Recomendado
Bus Interface and Protocol Bridging
The EPM9320RI208-20N provides up to 160 user I/O pins in its 208-pin PQFP package, making it effective for wide bus interface and protocol bridging tasks. Its 3.3 V or 5 V configurable I/O allows it to sit between legacy 5 V peripherals and 3.3 V host controllers, translating voltage levels and bus protocols in a single device. The 20 ns pin-to-pin delay supports bus cycle times down to roughly 50 MHz for simple combinatorial paths, adequate for ISA, PC/104, and similar legacy buses. Designers implement address decoding, wait-state generation, and handshake logic in the programmable array, replacing discrete transceivers and PALs. The non-volatile EEPROM configuration ensures the bridge logic is active from the first clock edge after power-up, avoiding bus contention during system initialization.
Recomendado
Instrumentation Front-End Logic
In test and measurement instruments, the EPM9320RI208-20N handles front-end control logic such as trigger generation, sample-clock sequencing, and ADC/DAC interface timing. The 20 ns deterministic delay allows precise placement of trigger and conversion-start edges relative to the sample clock, which directly affects measurement jitter. The 484 flip-flops support multi-channel sample counters and FIFO control without external logic. Because the device is EEPROM-configured, it powers up in a known state, which is important for instruments that must be ready immediately after power-on. The industrial temperature range supports benchtop and rack-mount instruments operating in non-climate-controlled environments. Designers often pair the CPLD with precision analog front-ends to implement programmable gain and channel-selection sequencing.
Recomendado
Telecommunications Line Card Control
The EPM9320RI208-20N is used on telecommunications line cards for local control functions such as timeslot assignment, framer interface logic, and alarm monitoring. Its 320 macrocells can implement per-channel control state machines for multiple T1/E1 or similar line interfaces, while the 208-pin package provides enough I/O to connect to framers, line drivers, and backplane connectors. The 5.0 V supply and 3.3 V/5 V configurable I/O match the mixed-voltage environment typical of telecom equipment. Deterministic 20 ns timing simplifies worst-case timing analysis for the control path, and EEPROM configuration ensures the line card is operational immediately after power restoration, which is essential for carrier-grade availability requirements.
Recomendado
Military and Aerospace Legacy Upgrades
The EPM9320RI208-20N is sometimes selected for military and aerospace legacy upgrades where an existing MAX 9000 design must be maintained or reproduced. Its industrial temperature range of -40C to +85C covers many ground-vehicle and avionics-bay environments, though it is not a radiation-hardened or full military-temperature part. The EEPROM configuration provides instant-on operation and immunity to single-event configuration upsets that affect SRAM FPGAs. The 20 ns deterministic delay supports repeatable timing in control and interface logic. Engineers performing form-fit-function replacement of obsolete boards often choose this device because the MAX 9000 architecture and MAX+PLUS II design flow are well documented, reducing requalification effort compared with migrating to a modern FPGA.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para EPM9320RI208-20N — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | EPM9320RI208-20 | EPM9320RI208-10N | EPM9320RC208-20N | EPM9320RC208-15N |
|---|---|---|---|---|---|
| Package | 208-pin PQFP | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same |
| Brand | Altera | Altera | Altera | Altera | Altera |
| Propagation Delay (tPD) | 20 ns | 20 ns | 10 ns | 20 ns | 15 ns |
| Macrocells | 320 | 320 | 320 | 320 | 320 |
| Flip-Flops | 484 | 484 | 484 | 484 | 484 |
| Temperature Grade | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Commercial (0C to +70C) |
| Supply Voltage (VCC) | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V |
| In-System Programmability | Yes (5.0 V ISP via JTAG) | Yes (5.0 V ISP via JTAG) | Yes (5.0 V ISP via JTAG) | Yes (5.0 V ISP via JTAG) | Yes (5.0 V ISP via JTAG) |
| Configuration Memory | EEPROM (non-volatile) | EEPROM (non-volatile) | EEPROM (non-volatile) | EEPROM (non-volatile) | EEPROM (non-volatile) |
| Lead Finish | Lead-free (N suffix) | Leaded (non-N) | Lead-free (N suffix) | Lead-free (N suffix) | Lead-free (N suffix) |
Principais diferenciais
- Industrial temperature range with lead-free finish (vs EPM9320RC208-20N)
- 20 ns speed grade at lower cost than 10 ns variant (vs EPM9320RI208-10N)
- Lead-free (N) package finish (vs EPM9320RI208-20)
- Deterministic 20 ns timing versus SRAM FPGA alternatives (vs EPM9320RC208-15N)
Notas de projeto
VCC must rise monotonically during power-up to guarantee correct EEPROM configuration loading. According to the MAX 9000 datasheet, a non-monotonic ramp can leave the device in an indeterminate state. Use a power-supply supervisor or RC network to ensure a clean 5.0 V ramp. Decouple each VCC pin with a 0.1 uF ceramic capacitor placed within 5 mm of the pin, plus a bulk 10 uF capacitor per device. Estimated: at 5.0 V and typical ICC of a few hundred mA, total decoupling should support transient currents without exceeding 50 mV ripple.
The four dedicated input pins provide low-skew, device-wide distribution for global clock, clear, and output-enable signals. Route these signals as controlled-impedance traces (50 ohm) and keep stub lengths under 10 mm to preserve the low-skew benefit. Do not use general-purpose I/O pins for global clocks, as they route through the programmable interconnect and add delay and skew. Terminate unused dedicated inputs to GND or VCC through a resistor rather than leaving them floating.
Inputs may undershoot to -2.0 V or overshoot to 7.0 V for periods shorter than 20 ns under no-load conditions, but sustained excursions beyond the -0.5 V (I/O) or -0.3 V (dedicated input) minimum DC limits will damage the device. Add series termination resistors (22-33 ohm) on fast-edge signals that drive long traces. Also verify that the JTAG TCK, TMS, TDI, and TDO pins are not loaded by other devices on the scan chain in a way that violates setup/hold timing during ISP.
The 208-pin PQFP package dissipates heat primarily through the package body and leads. Estimated: at 5.0 V and 300 mA ICC, power dissipation is approximately 1.5 W. With a typical theta_JA of 30-40 C/W for a 208-pin PQFP on a multi-layer board, junction temperature rise is roughly 45-60 C above ambient. In a 70 C ambient environment this approaches the 85 C industrial limit, so provide adequate copper area on the VCC and GND planes and ensure airflow in enclosed cabinets.
Place the device centrally on the board to minimize trace lengths to connected peripherals. Keep the JTAG header close to the CPLD and route TCK as a controlled-impedance trace away from noisy switching signals. Use a solid ground plane under the device and avoid routing high-speed signals beneath the package. For the 0.5 mm lead pitch, use a stencil with adequate paste release and verify solder-joint quality with X-ray inspection, as fine-pitch PQFP assembly is prone to bridging.
Informações de conformidade
The 'N' suffix in Altera part numbering typically denotes a lead-free package variant, but RoHS/REACH compliance was not confirmed in the retrieved web data. Verify with the manufacturer or distributor certificate of compliance before design-in. AEC-Q100 is not applicable to this industrial-grade CPLD.