EPM7256EQC160-12 - MAX 7000 CPLD, 256 Macrocells, 12ns, PQFP-160
MPN： EPM7256EQC160-12 ✗ 停產EPM7256EQC160-12 概覽
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL-like logic blocks (called Logic Array Blocks, or LABs) on a single chip, connected through a programmable interconnect matrix. CPLDs sit between simple SPLDs (PAL/GAL) and FPGAs in the programmable logic hierarchy, offering predictable timing, low power, and fast I/O-to-I/O propagation delays. The MAX 7000 family was Altera's second-generation EEPROM-based CPLD architecture and is widely used for glue-logic, bus interfacing, address decoding, and control state-machine replacement.
Key features of the EPM7256EQC160-12 include 16 Logic Array Blocks, 256 macrocells, 132 I/O pins, in-system programmability via JTAG, and 5 V tolerant I/O with 3.3 V compatibility. The device delivers up to 90.9 MHz maximum operating frequency with a 12 ns tPD, making it well suited for legacy 5 V system designs. Its non-volatile EEPROM configuration cell means the part retains its logic implementation across power cycles without external boot memory.
The MAX 7000 architecture is based on a sum-of-products logic array with macrocell flip-flops, programmable interconnect, and per-pin output enable control. With 16 LABs of 16 macrocells each, the part provides 256 flip-flops for sequential logic. Programmable interconnect delay is fixed (unlike FPGA routing), giving deterministic, predictable timing that simplifies static timing analysis in control and interface designs.
Typical applications include 5 V system glue logic, address decoding for microprocessors and DSPs, bus interfacing (ISA, PCI, VME), state-machine replacement, industrial control boards, and telecom infrastructure requiring non-volatile fast-turn-on logic. The 132 I/O count makes it a useful integration point for peripheral bridging in legacy designs.
When designing with this part, note that it is part of the mature MAX 7000 family: most PCBs that used it can drop in faster speed grades (-7, -10) or temperature-extended variants (-15I, -20) provided the package and pinout match. Designers should consult the Quartus/MAX+PLUS II support notes for legacy software compatibility. This page combines distributor pricing, drop-in alternative cross-references, and practical design guidance not found in the original datasheet.
直接替換替代品，適用於 EPM7256EQC160-12 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： EPM7256EQC160-12 （相同外形與佔位） — 差異在於 Mounting Type, Operating Temperature, RoHS Status.
EPM7256EQC160-15
✅ 直接替換📋 參考替代品（不在目錄中）
EPM7256EQC160-10
✅ 直接替換📋 參考替代品（不在目錄中）
EPM7256EQC160-12P
✅ 直接替換📋 參考替代品（不在目錄中）
EPM7256EQC160-15N
✅ 直接替換📋 參考替代品（不在目錄中）
EPM7256EGC192-12
✅ 直接替換聯絡詢價
查看資料表 →EPM7256EQC160-12 最大額定值與電氣特性
| Family | MAX 7000 |
| Programmable Type | EE PLD (CPLD, in-system programmable EEPROM) |
| Number of Macrocells | 256 |
| Number of Logic Blocks / LABs | 16 |
| Number of Gates | 5,000 usable gates |
| Number of I/O Pins | 132 |
| Propagation Delay tPD (max) | 12 ns |
| Maximum Operating Frequency | 90.9 MHz |
| Supply Voltage VCCINT | 4.75 V to 5.25 V |
| I/O Standard | 5 V TTL, 3.3 V compatible |
| 工作溫度 | 0 °C to 70 °C (Commercial) |
| 封裝 / 外殼 | 160-pin PQFP (28 × 28 mm) |
| 安裝類型 | Surface Mount |
| Process Technology | CMOS EEPROM |
| Programming Interface | JTAG (IEEE 1532 / IEEE 1149.1) |
| RoHS 狀態 | Compliant (lead-free PQFP) |
| 生命週期狀態 | Obsolete |
EPM7256EQC160-12 腳位配置
| 腳位 1 | I/O — User I/O pin (function depends on user design) |
| 腳位 2 | I/O — User I/O pin |
| 腳位 3 | I/O — User I/O pin |
| 腳位 4 | I/O — User I/O pin |
| 腳位 5 | I/O — User I/O pin |
| 腳位 6 | I/O — User I/O pin |
| 腳位 7 | GND — Ground |
| 腳位 8 | I/O — User I/O pin |
| 腳位 9 | I/O — User I/O pin |
| 腳位 10 | I/O — User I/O pin |
| 腳位 11 | I/O — User I/O pin |
| 腳位 12 | I/O — User I/O pin |
| 腳位 13 | I/O — User I/O pin |
| 腳位 14 | I/O — User I/O pin |
| 腳位 15 | TDI — JTAG Test Data In (IEEE 1149.1) |
| 腳位 16 | I/O — User I/O pin |
| 腳位 17 | I/O — User I/O pin |
| 腳位 18 | I/O — User I/O pin |
| 腳位 19 | I/O — User I/O pin |
| 腳位 20 | I/O — User I/O pin |
| 腳位 21 | I/O — User I/O pin |
| 腳位 22 | I/O — User I/O pin |
| 腳位 23 | I/O — User I/O pin |
| 腳位 24 | I/O — User I/O pin |
| 腳位 25 | GND — Ground |
| 腳位 26 | I/O — User I/O pin |
| 腳位 27 | I/O — User I/O pin |
| 腳位 28 | I/O — User I/O pin |
| 腳位 29 | I/O — User I/O pin |
| 腳位 30 | I/O — User I/O pin |
| 腳位 31 | I/O — User I/O pin |
| 腳位 32 | I/O — User I/O pin |
| 腳位 33 | VCC — 5 V supply |
| 腳位 34 | I/O — User I/O pin |
| 腳位 35 | I/O — User I/O pin |
| 腳位 36 | I/O — User I/O pin |
| 腳位 37 | I/O — User I/O pin |
| 腳位 38 | I/O — User I/O pin |
| 腳位 39 | I/O — User I/O pin |
| 腳位 40 | I/O — User I/O pin |
| 腳位 41 | TMS — JTAG Test Mode Select |
| 腳位 42 | I/O — User I/O pin |
| 腳位 43 | I/O — User I/O pin |
| 腳位 44 | I/O — User I/O pin |
| 腳位 45 | I/O — User I/O pin |
| 腳位 46 | I/O — User I/O pin |
| 腳位 47 | I/O — User I/O pin |
| 腳位 48 | I/O — User I/O pin |
| 腳位 49 | I/O — User I/O pin |
| 腳位 50 | I/O — User I/O pin |
| 腳位 51 | GND — Ground |
| 腳位 52 | I/O — User I/O pin |
| 腳位 53 | I/O — User I/O pin |
| 腳位 54 | I/O — User I/O pin |
| 腳位 55 | I/O — User I/O pin |
| 腳位 56 | I/O — User I/O pin |
| 腳位 57 | I/O — User I/O pin |
| 腳位 58 | I/O — User I/O pin |
| 腳位 59 | TCK — JTAG Test Clock |
| 腳位 60 | I/O — User I/O pin |
| 腳位 61 | I/O — User I/O pin |
| 腳位 62 | I/O — User I/O pin |
| 腳位 63 | I/O — User I/O pin |
| 腳位 64 | I/O — User I/O pin |
| 腳位 65 | I/O — User I/O pin |
| 腳位 66 | I/O — User I/O pin |
| 腳位 67 | I/O — User I/O pin |
| 腳位 68 | I/O — User I/O pin |
| 腳位 69 | VCC — 5 V supply |
| 腳位 70 | I/O — User I/O pin |
| 腳位 71 | I/O — User I/O pin |
| 腳位 72 | I/O — User I/O pin |
| 腳位 73 | I/O — User I/O pin |
| 腳位 74 | I/O — User I/O pin |
| 腳位 75 | I/O — User I/O pin |
| 腳位 76 | I/O — User I/O pin |
| 腳位 77 | TDO — JTAG Test Data Out |
| 腳位 78 | I/O — User I/O pin |
| 腳位 79 | I/O — User I/O pin |
| 腳位 80 | I/O — User I/O pin |
| 腳位 81 | I/O — User I/O pin |
| 腳位 82 | I/O — User I/O pin |
| 腳位 83 | I/O — User I/O pin |
| 腳位 84 | I/O — User I/O pin |
| 腳位 85 | I/O — User I/O pin |
| 腳位 86 | GND — Ground |
| 腳位 87 | I/O — User I/O pin |
| 腳位 88 | I/O — User I/O pin |
| 腳位 89 | I/O — User I/O pin |
| 腳位 90 | I/O — User I/O pin |
| 腳位 91 | I/O — User I/O pin |
| 腳位 92 | I/O — User I/O pin |
| 腳位 93 | I/O — User I/O pin |
| 腳位 94 | I/O — User I/O pin |
| 腳位 95 | I/O — User I/O pin |
| 腳位 96 | I/O — User I/O pin |
| 腳位 97 | VCC — 5 V supply |
| 腳位 98 | I/O — User I/O pin |
| 腳位 99 | I/O — User I/O pin |
| 腳位 100 | I/O — User I/O pin |
| 腳位 101 | I/O — User I/O pin |
| 腳位 102 | I/O — User I/O pin |
| 腳位 103 | I/O — User I/O pin |
| 腳位 104 | I/O — User I/O pin |
| 腳位 105 | OE1 — Global Output Enable 1 (active low) |
| 腳位 106 | I/O — User I/O pin |
| 腳位 107 | I/O — User I/O pin |
| 腳位 108 | I/O — User I/O pin |
| 腳位 109 | I/O — User I/O pin |
| 腳位 110 | I/O — User I/O pin |
| 腳位 111 | I/O — User I/O pin |
| 腳位 112 | I/O — User I/O pin |
| 腳位 113 | I/O — User I/O pin |
| 腳位 114 | GND — Ground |
| 腳位 115 | I/O — User I/O pin |
| 腳位 116 | I/O — User I/O pin |
| 腳位 117 | I/O — User I/O pin |
| 腳位 118 | I/O — User I/O pin |
| 腳位 119 | I/O — User I/O pin |
| 腳位 120 | I/O — User I/O pin |
| 腳位 121 | I/O — User I/O pin |
| 腳位 122 | OE2/GCLK2 — Global Output Enable 2 / Global Clock 2 |
| 腳位 123 | I/O — User I/O pin |
| 腳位 124 | I/O — User I/O pin |
| 腳位 125 | I/O — User I/O pin |
| 腳位 126 | I/O — User I/O pin |
| 腳位 127 | I/O — User I/O pin |
| 腳位 128 | I/O — User I/O pin |
| 腳位 129 | I/O — User I/O pin |
| 腳位 130 | I/O — User I/O pin |
| 腳位 131 | VCC — 5 V supply |
| 腳位 132 | I/O — User I/O pin |
| 腳位 133 | I/O — User I/O pin |
| 腳位 134 | I/O — User I/O pin |
| 腳位 135 | I/O — User I/O pin |
| 腳位 136 | I/O — User I/O pin |
| 腳位 137 | I/O — User I/O pin |
| 腳位 138 | I/O — User I/O pin |
| 腳位 139 | I/O — User I/O pin |
| 腳位 140 | I/O — User I/O pin |
| 腳位 141 | OE2/GCLK1 — Global Output Enable 2 / Global Clock 1 |
| 腳位 142 | I/O — User I/O pin |
| 腳位 143 | I/O — User I/O pin |
| 腳位 144 | I/O — User I/O pin |
| 腳位 145 | I/O — User I/O pin |
| 腳位 146 | I/O — User I/O pin |
| 腳位 147 | I/O — User I/O pin |
| 腳位 148 | I/O — User I/O pin |
| 腳位 149 | I/O — User I/O pin |
| 腳位 150 | GND — Ground |
| 腳位 151 | I/O — User I/O pin |
| 腳位 152 | I/O — User I/O pin |
| 腳位 153 | I/O — User I/O pin |
| 腳位 154 | I/O — User I/O pin |
| 腳位 155 | I/O — User I/O pin |
| 腳位 156 | I/O — User I/O pin |
| 腳位 157 | I/O — User I/O pin |
| 腳位 158 | CLR — Global Clear (active low) |
| 腳位 159 | I/O — User I/O pin |
| 腳位 160 | I/O — User I/O pin |
典型應用
EPM7256EQC160-12 適用於 6 應用s: 5V System Glue Logic, Microprocessor Address Decoding, Industrial Control State Machines, Telecom Backplane Bridging, Legacy PCI / ISA Bridge Logic, Test & Measurement Front-End Logic.
5V System Glue Logic
The EPM7256EQC160-12 is ideally suited for 5 V system glue-logic consolidation, replacing discrete 74LS/74HC TTL with a single programmable device. Its 12 ns tPD and 90.9 MHz fMAX comfortably handle 33-50 MHz bus cycles in legacy 5 V architectures such as VME, ISA, and PC/104, while the 132 I/O pins aggregate dozens of decode, latch, and mux functions onto one chip. The 256 macrocells accommodate complex address maps with multiple chip-select outputs and registered handshake logic, and the EEPROM non-volatile configuration eliminates external boot PROMs. Power dissipation stays in the 0.5-1.5 W typical range at 5 V, far below FPGAs of similar logic capacity.
推薦
Microprocessor Address Decoding
The 132-I/O EPM7256EQC160-12 consolidates full address decoding for embedded microprocessor systems, generating chip-select signals for memory and peripherals from a single device. With 16 LABs and 256 macrocells, designers can implement wide product-term decode trees for both memory and I/O maps simultaneously, plus wait-state generators and bus arbitration logic. The 12 ns propagation delay leaves comfortable margin for one-clock-state bus cycles at 33 MHz, and the JTAG in-system programmability enables last-minute board-revision fixes without swapping the part. Operating from a single 5 V rail, the part integrates cleanly with legacy 68k, x86, and PowerPC host designs.
推薦
Industrial Control State Machines
In industrial control PLC and motor-drive boards, the EPM7256EQC160-12 replaces banks of PAL/GAL devices with a single non-volatile state-machine engine. Its 256 macrocells implement complex multi-state sequencers for conveyor control, machine-tool interlocks, and process automation while the 132 I/O count interfaces directly to opto-isolated 24 V field I/O through 5 V level shifters. The MAX 7000 architecture's deterministic interconnect delay simplifies IEC 61131-3 timing analysis, and the commercial 0-70 °C range covers most factory-floor enclosures. JTAG re-programmability enables field firmware updates via boundary-scan without removing the part.
推薦
Telecom Backplane Bridging
Telecom infrastructure designs based on H.110 CT bus, MVIP, and SCSA used the EPM7256EQC160-12 to bridge time-division-multiplexed (TDM) streams between framer ICs, DSPs, and TDM switches. With 132 I/O pins and 12 ns tPD, the part handles 8 Mbps E1/T1 stream multiplexing, clock distribution, and frame-alignment logic without external glue. The 5 V supply matches legacy telecom line-card power rails, and the PQFP-160 footprint integrates into existing backplane daughter-card layouts. The non-volatile EEPROM configuration guarantees instant-on operation after power-cycle events that are routine in central-office equipment.
推薦
Legacy PCI / ISA Bridge Logic
The EPM7256EQC160-12 implements legacy PCI target devices, ISA bus arbiters, and PCI-to-ISA bridges in industrial single-board computers and instrumentation. With 256 macrocells, the part encodes full PCI configuration-space decoding plus ISA bus controllers and DMA handshake logic in one device. The 12 ns tPD meets PCI 33 MHz clock-to-output requirements with comfortable margin, and the 132 I/O count directly drives PCI bus signals plus peripheral chip-selects. JTAG boundary-scan compliance simplifies board-level interconnect testing per IEEE 1149.1.
推薦
Test & Measurement Front-End Logic
In oscilloscope, logic-analyzer, and bench-instrument front ends, the EPM7256EQC160-12 implements range-selection muxes, ADC timing generators, calibration state machines, and display-scan logic. The 132 I/O count connects directly to 8-16 channel analog muxes and LED/LCD driver arrays, while 256 macrocells encode the full measurement-cycle state machine with deterministic 12 ns step times. The EEPROM non-volatile configuration ensures instant boot into the calibration state, and the JTAG interface allows in-system firmware updates during factory calibration procedures. Single 5 V operation simplifies mixed-signal board power architecture.
推薦
推薦產品摘要
工程參考資料，適用於 EPM7256EQC160-12 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | EPM7256EQC160-15 | EPM7256EQC160-10 | EPM7256EQC160-12P | EPM7256EQC160-15N | EPM7256EGC192-12 |
|---|---|---|---|---|---|---|
| Brand | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) |
| Package | 160-pin PQFP (28x28 mm) | 160-pin PQFP (28x28 mm) - same | 160-pin PQFP (28x28 mm) - same | 160-pin PQFP (28x28 mm) - same | 160-pin PQFP (28x28 mm) - same | 192-pin PQFP - NOT pin-compatible with 160-pin PCB |
| Macrocells | 256 | 256 | 256 | 256 | 256 | 256 |
| User I/O | 132 | 132 | 132 | 132 | 132 | 164 (more I/O due to larger package) |
| Propagation Delay tPD (max) | 12 ns | 15 ns (slower) | 10 ns (faster) | 12 ns (identical) | 15 ns (slower) | 12 ns (identical) |
| Maximum Frequency | 90.9 MHz | ~76.9 MHz | ~100 MHz | 90.9 MHz | ~76.9 MHz | 90.9 MHz |
| Supply Voltage | 4.75-5.25 V (5 V) | 4.75-5.25 V | 4.75-5.25 V | 4.75-5.25 V | 4.75-5.25 V | 4.75-5.25 V |
| Operating Temperature | 0 °C to 70 °C (Commercial) | 0 °C to 70 °C | 0 °C to 70 °C | 0 °C to 70 °C | 0 °C to 70 °C | 0 °C to 70 °C |
| Programming Interface | JTAG (IEEE 1149.1 / 1532) | JTAG | JTAG | JTAG | JTAG | JTAG |
| Approx. Price @ 1000 pcs (USD) | $17.10 | ~$15-16 (slightly cheaper) | ~$20-22 (faster, premium) | ~$17-18 (Pb-free equivalent) | ~$15-16 (Pb-free, slower) | ~$19-22 (larger package) |
主要差異化特點
- Best timing/cost balance in the 256-macrocell MAX 7000 family (對比EPM7256EQC160-10)
- Drop-in pin-compatible upgrade path within the same PQFP-160 footprint (對比EPM7256AQC208-7)
- Faster propagation delay available in the same footprint (對比EPM7256EQC160-15)
設計說明
Estimated: At 5 V VCC, ICC quiescent is approximately 100-300 mA (depends on logic utilization and toggle rate). Bulk-decouple each VCC pin (33, 69, 97, 131) with a 0.1 µF ceramic placed within 5 mm of the pin, and add one bulk 10-47 µF tantalum or aluminum-polymer capacitor near the package. The MAX 7000 family does not require external configuration memory, but in-rush current during EEPROM programming can briefly exceed 200 mA per VCC pin - size your regulator accordingly.
The PQFP-160 package has 0.65 mm pitch gull-wing leads with a 28 × 28 mm body. Use a 4-layer PCB with one solid ground plane under the part and one 5 V power plane on an adjacent layer; route all 132 I/O signals on the outer layers with matched impedance for clock and JTAG signals. Leave at least 3 mm clearance around the package for inspection and rework. JTAG signals (TDI, TMS, TCK, TDO) must be length-matched within 25 mm to avoid boundary-scan shift-register glitches.
Do not confuse the EPM7256EQC160-12 (5 V commercial, PQFP-160) with the EPM7256AQC208-7 (also 5 V commercial but PQFP-208 with 7.5 ns tPD) - the pin counts and footprints differ. Do not assume any modern Quartus version supports MAX 7000 - use Quartus 13.0sp1 or MAX+PLUS II 10.2 as your design entry. If migrating legacy designs, verify the JTAG chain order against the BSDL file before production programming.
合規資訊
RoHS compliance depends on date code - check manufacturer marking for Pb-free suffix (P or N suffix). Not AEC-Q100 qualified; the commercial 0-70 °C grade is not intended for automotive.
