M4A5-64/32-7JI - ispMACH 4A 64-Macrocell 5V CPLD | Lattice
MPN: M4A5-64/32-7JI ✗ Cuối đờiM4A5-64/32-7JI Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho M4A5-64/32-7JI — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
M4A5-64/32-10JI
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
M4A5-64/32-12JI
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
M4A5-64/32-7VNI
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
M4A5-64/32-7JC
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
M4A5-64/32-12JNI
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
M4A5-64/32-7JI Tỷ lệ tối đa & tính chất điện
| 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 |
| Hộp | 44-pin PLCC (J-lead, surface mount) |
| Nhiệt độ hoạt động | -40C to +85C (industrial, per distributor listings) |
| Số chân | 44 |
| Trạng thái RoHS | non-compliant (legacy PLCC) |
Cấu hình chân M4A5-64/32-7JI
| Chân 1 | I/O — User I/O pin (bank A) |
| Chân 2 | I/O — User I/O pin (bank A) |
| Chân 3 | I/O — User I/O pin (bank A) |
| Chân 4 | I/O — User I/O pin (bank A) |
| Chân 5 | I/O — User I/O pin (bank A) |
| Chân 6 | I/O — User I/O pin (bank A) |
| Chân 7 | I/O — User I/O pin (bank A) |
| Chân 8 | I/O — User I/O pin (bank A) |
| Chân 9 | TDI — JTAG Test Data In |
| Chân 10 | TMS — JTAG Test Mode Select |
| Chân 11 | TCK — JTAG Test Clock |
| Chân 12 | VCC — +5 V supply |
| Chân 13 | I/O — User I/O pin (bank B) |
| Chân 14 | I/O — User I/O pin (bank B) |
| Chân 15 | I/O — User I/O pin (bank B) |
| Chân 16 | I/O — User I/O pin (bank B) |
| Chân 17 | I/O — User I/O pin (bank B) |
| Chân 18 | I/O — User I/O pin (bank B) |
| Chân 19 | GND — Ground |
| Chân 20 | I/O — User I/O pin (bank B) |
| Chân 21 | I/O — User I/O pin (bank B) |
| Chân 22 | I/O — User I/O pin (bank B) |
| Chân 23 | I/O — User I/O pin (bank C) |
| Chân 24 | I/O — User I/O pin (bank C) |
| Chân 25 | I/O — User I/O pin (bank C) |
| Chân 26 | VCC — +5 V supply |
| Chân 27 | I/O — User I/O pin (bank C) |
| Chân 28 | I/O — User I/O pin (bank C) |
| Chân 29 | I/O — User I/O pin (bank C) |
| Chân 30 | GND — Ground |
| Chân 31 | I/O — User I/O pin (bank C) |
| Chân 32 | I/O — User I/O pin (bank D) |
| Chân 33 | I/O — User I/O pin (bank D) |
| Chân 34 | I/O — User I/O pin (bank D) |
| Chân 35 | I/O — User I/O pin (bank D) |
| Chân 36 | I/O — User I/O pin (bank D) |
| Chân 37 | VCC — +5 V supply |
| Chân 38 | I/O — User I/O pin (bank D) |
| Chân 39 | I/O — User I/O pin (bank D) |
| Chân 40 | I/O — User I/O pin (bank D) |
| Chân 41 | GND — Ground |
| Chân 42 | I/O — User I/O pin (bank D) |
| Chân 43 | TDO — JTAG Test Data Out |
| Chân 44 | I/O — User I/O pin (bank D) |
Ứng dụng tiêu biểu
M4A5-64/32-7JI phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho M4A5-64/32-7JI — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Fastest speed grade in the ispMACH 4A 64-macrocell family (vsM4A5-64/32-10JI)
- Same-footprint industrial-temperature drop-in exists (vsM4A5-64/32-7JC)
- Pin-compatible path to faster speed grades (vsM4A5-64/32-12JI)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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).
