M4A5-64/32-7JI - ispMACH 4A 64-Macrocell 5V CPLD | Lattice
MPN： M4A5-64/32-7JI ✗ 停產M4A5-64/32-7JI 概覽
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL/GAL-style macrocell blocks with a central interconnect matrix, providing deterministic, single-clock-cycle logic with predictable timing. CPLDs sit below FPGAs in the programmable logic hierarchy: they offer fewer gates than FPGAs but provide instant-on operation, superior pin-to-pin timing consistency, and robust 5-V I/O tolerance, which is why they remain preferred for glue logic, bus interfacing, and power-sequencing tasks.
Key features include 100% pin-out retention, 100% macrocell utilization, in-system programmability via IEEE 1532 / JTAG, four 36-input PAL blocks with 16 macrocells each, and a global routing pool that delivers fast, predictable signal propagation. The 5-V tolerant I/Os simplify interfacing to legacy TTL/CMOS buses without level shifters.
The ispMACH 4A architecture uses Lattice's E2CMOS process with non-volatile storage of the configuration, so the device powers up in a known functional state with no external boot PROM. The four-block, single-pool interconnect fabric delivers uniform 7.5 ns pin-to-pin delays across all I/O combinations.
Typical applications include address decoding and bus interfacing in 5-V industrial controllers, glue logic between microprocessors and peripherals, power-supply sequencing logic, and legacy system upgrades that require drop-in 5-V programmable logic with JTAG in-field reprogrammability.
When designing with the M4A5-64/32-7JI, observe the 4.75 V to 5.25 V supply range and place 0.1 uF decoupling capacitors adjacent to every VCC pin. Because the part is in-system programmable, expose TDI, TDO, TMS, and TCK to a JTAG header for field updates.
This page synthesizes distributor inventory, drop-in alternatives, and practical design notes for engineers migrating away from the obsolete original Lattice part number.
直接替換替代品，適用於 M4A5-64/32-7JI — 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。
M4A5-64/32-10JI
✅ 直接替換📋 參考替代品（不在目錄中）
M4A5-64/32-12JI
✅ 直接替換📋 參考替代品（不在目錄中）
M4A5-64/32-7VNI
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
M4A5-64/32-7JC
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
M4A5-64/32-12JNI
✅ 直接替換📋 參考替代品（不在目錄中）
M4A5-64/32-7JI 最大額定值與電氣特性
| Family | ispMACH 4A |
| Series | M4A5 (5 V) |
| Macrocells | 64 |
| Usable Gates | 2.5K |
| Number of PAL Blocks | 4 (16 macrocells each) |
| User I/Os | 32 |
| Propagation Delay (tpd) | 7.5 ns (typical) |
| Internal Operating Frequency | 125 MHz (max) |
| Supply Voltage (VCC) | 4.75 V to 5.25 V |
| Logic Family | E2CMOS |
| Programmable Type | In-System Programmable (ISP) via JTAG |
| 封裝 | 44-pin PLCC (J-lead, surface mount) |
| 工作溫度 | -40C to +85C (industrial, per distributor listings) |
| 腳位數 | 44 |
| RoHS 狀態 | non-compliant (legacy PLCC) |
M4A5-64/32-7JI 腳位配置
| 腳位 1 | I/O — User I/O pin (bank A) |
| 腳位 2 | I/O — User I/O pin (bank A) |
| 腳位 3 | I/O — User I/O pin (bank A) |
| 腳位 4 | I/O — User I/O pin (bank A) |
| 腳位 5 | I/O — User I/O pin (bank A) |
| 腳位 6 | I/O — User I/O pin (bank A) |
| 腳位 7 | I/O — User I/O pin (bank A) |
| 腳位 8 | I/O — User I/O pin (bank A) |
| 腳位 9 | TDI — JTAG Test Data In |
| 腳位 10 | TMS — JTAG Test Mode Select |
| 腳位 11 | TCK — JTAG Test Clock |
| 腳位 12 | VCC — +5 V supply |
| 腳位 13 | I/O — User I/O pin (bank B) |
| 腳位 14 | I/O — User I/O pin (bank B) |
| 腳位 15 | I/O — User I/O pin (bank B) |
| 腳位 16 | I/O — User I/O pin (bank B) |
| 腳位 17 | I/O — User I/O pin (bank B) |
| 腳位 18 | I/O — User I/O pin (bank B) |
| 腳位 19 | GND — Ground |
| 腳位 20 | I/O — User I/O pin (bank B) |
| 腳位 21 | I/O — User I/O pin (bank B) |
| 腳位 22 | I/O — User I/O pin (bank B) |
| 腳位 23 | I/O — User I/O pin (bank C) |
| 腳位 24 | I/O — User I/O pin (bank C) |
| 腳位 25 | I/O — User I/O pin (bank C) |
| 腳位 26 | VCC — +5 V supply |
| 腳位 27 | I/O — User I/O pin (bank C) |
| 腳位 28 | I/O — User I/O pin (bank C) |
| 腳位 29 | I/O — User I/O pin (bank C) |
| 腳位 30 | GND — Ground |
| 腳位 31 | I/O — User I/O pin (bank C) |
| 腳位 32 | I/O — User I/O pin (bank D) |
| 腳位 33 | I/O — User I/O pin (bank D) |
| 腳位 34 | I/O — User I/O pin (bank D) |
| 腳位 35 | I/O — User I/O pin (bank D) |
| 腳位 36 | I/O — User I/O pin (bank D) |
| 腳位 37 | VCC — +5 V supply |
| 腳位 38 | I/O — User I/O pin (bank D) |
| 腳位 39 | I/O — User I/O pin (bank D) |
| 腳位 40 | I/O — User I/O pin (bank D) |
| 腳位 41 | GND — Ground |
| 腳位 42 | I/O — User I/O pin (bank D) |
| 腳位 43 | TDO — JTAG Test Data Out |
| 腳位 44 | I/O — User I/O pin (bank D) |
典型應用
M4A5-64/32-7JI 適用於 6 應用s: 5-V Industrial Bus Address Decoding, Power-Supply Sequencing and Supervisory Logic, Legacy 5-V Glue Logic Replacement, Motor Control Interface Logic, Display and Backplane Multiplexing, Communication Protocol Bridging.
5-V Industrial Bus Address Decoding
The M4A5-64/32-7JI is well suited to address-decoding and chip-select generation in 5-V industrial controller boards. Its 32 user I/Os and 64 macrocells comfortably handle 8-to-16-bit address bus decoding plus wait-state and interrupt logic. The 5-V TTL-compatible I/O eliminates level shifters when interfacing to legacy microprocessors such as the 8051, H8, or Z80, and the 7.5 ns pin-to-pin delay keeps address-to-CS skew well within a single memory cycle at 33 MHz.
推薦
Power-Supply Sequencing and Supervisory Logic
The M4A5-64/32-7JI reliably implements multi-rail power-sequencing state machines in 5-V systems. Its non-volatile E2CMOS configuration means the device powers up in a known state with no boot PROM, and its deterministic 7.5 ns tpd enables tight margining of PG (power-good) signals between regulators. The 32 I/Os are sufficient to sequence up to eight rails plus monitor enable and reset handshake lines.
推薦
Legacy 5-V Glue Logic Replacement
For modernizing legacy 5-V boards, the M4A5-64/32-7JI replaces dozens of 74-series TTL gates with a single in-system programmable device. Its 5-V tolerant I/Os directly interface to legacy buses and its JTAG programming permits board-level rework without removing the part. The 64 macrocells accommodate 20-to-30 equivalent TTL packages in the same PLCC-44 footprint.
推薦
Motor Control Interface Logic
The M4A5-64/32-7JI generates PWM gating, dead-time insertion, and fault-handling logic for industrial motor drives. Its deterministic timing (7.5 ns tpd) keeps PWM edge jitter low, which is critical for switching-loss and acoustic-noise performance. The 5-V tolerant I/Os interface directly to gate-driver inputs such as the IRS2113PBF without level translation.
推薦
Display and Backplane Multiplexing
The M4A5-64/32-7JI drives multiplexed character LCDs, LED matrix backplanes, and keypad-scanning matrices through its 32 user I/Os. The non-volatile configuration means the display controller logic is alive within microseconds of power-up, eliminating the boot delay of microprocessor-based solutions. The 7.5 ns tpd easily handles 1 MHz multiplex refresh rates.
推薦
Communication Protocol Bridging
The M4A5-64/32-7JI bridges between legacy and modern communication interfaces such as UART-to-I2C, SPI-to-parallel, or RS-485-to-PCI in industrial gateways. Its 32 I/Os and deterministic timing allow precise bit-banging of slower protocols while feeding FIFO or DMA handshakes to a host processor. The JTAG ISP enables field upgrades when protocol revisions are needed.
推薦
推薦產品摘要
工程參考資料，適用於 M4A5-64/32-7JI — 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 | M4A5-64/32-10JI | M4A5-64/32-12JI | M4A5-64/32-7VNI | M4A5-64/32-7JC | M4A5-64/32-12JNI |
|---|---|---|---|---|---|---|
| Package | 44-pin PLCC (J-lead) | 44-pin PLCC - same | 44-pin PLCC - same | 44-pin PLCC - same | 44-pin PLCC - same | 44-pin PLCC - same |
| Brand | Lattice Semiconductor | Lattice Semiconductor | Lattice Semiconductor | Lattice Semiconductor | Lattice Semiconductor | Lattice Semiconductor |
| Macrocells | 64 | 64 | 64 | 64 | 64 | 64 |
| User I/Os | 32 | 32 | 32 | 32 | 32 | 32 |
| Propagation Delay (tpd) | 7.5 ns | 10 ns (slower) | 12 ns (slower) | 7.5 ns | 7.5 ns | 12 ns (slower) |
| Internal fmax | 125 MHz | 111 MHz | 95 MHz | 125 MHz | 125 MHz | 95 MHz |
| Supply Voltage | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +85C | -40C to +85C | 0C to +70C (commercial) | -40C to +85C |
主要差異化特點
- Fastest speed grade in the ispMACH 4A 64-macrocell family (對比M4A5-64/32-10JI)
- Same-footprint industrial-temperature drop-in exists (對比M4A5-64/32-7JC)
- Pin-compatible path to faster speed grades (對比M4A5-64/32-12JI)
設計說明
Place one 0.1 uF ceramic decoupling capacitor adjacent to each of the four VCC pins (pins 12, 26, 37, and one bank VCC) and one 10 uF tantalum bulk capacitor near the PLCC package. The ispMACH 4A family draws transient currents during JTAG programming; insufficient decoupling can cause programming failures or in-system functional glitches. Keep the VCC trace short and wide to minimize inductance.
Expose TDI (pin 9), TMS (pin 10), TCK (pin 11), and TDO (pin 43) to a JTAG header on the PCB so the device can be reprogrammed in-system via IEEE 1532. Keep JTAG trace lengths under 100 mm and series-terminate TCK with a 33 ohm resistor close to the driver. Avoid routing JTAG signals near switching power or motor-drive lines to prevent programming errors.
The M4A5-64/32-7JI is not RoHS-compliant because it ships in lead-bearing PLCC packaging. New designs targeting RoHS should migrate to the ispMACH 4000ZE family (e.g., LC4064ZE-5TN44I) in lead-free TQFP-44 or TQFP-48. Also note that the JTAG pinout is shared with the user I/O bank on some packages - always check the BSDL file before designing JTAG isolation logic.
合規資訊
44-pin PLCC package contains lead (Pb) as part of the J-lead plating and is non-RoHS. Lattice ispMACH 4A family is not AEC-Q100 qualified (industrial grade only).
