EPM3512AFC256-20 - MAX 3000A CPLD, 512 Macrocells, BGA-256 | Altera
MPN： EPM3512AFC256-20 ✗ 停產EPM3512AFC256-20 概覽
Background: A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic IC that lives in the taxonomy programmable logic -> logic IC -> integrated circuit. Unlike an FPGA, a CPLD uses a deterministic, sum-of-products architecture with on-chip EEPROM/flash configuration memory, giving it instant-on behavior, predictable timing, and a fixed number of macrocells (large groups of product terms feeding an OR gate and a flip-flop). The MAX 3000A is the second-generation MAX family, succeeding the original MAX 7000/MAX 3000 series with a 3.3 V core and multi-voltage I/O support for 2.5 V, 3.3 V, and 5.0 V mixed-mode interfaces.
Key features of the EPM3512AFC256-20 include 512 macrocells, 10,000 typical gates, a maximum toggle frequency that supports glue-logic clock rates, JTAG-based IEEE 1149.1 boundary-scan, and in-system programmability via the Altera ByteBlaster or BitBlaster download cable. The device supports 2.5-V, 3.3-V, and 5.0-V I/O operation through separate VCCINT (internal) and VCCIO (I/O driver) supply pins, enabling direct interfacing to legacy 5 V TTL peripherals. The 256-ball FBGA package supports the largest pin-count variants in the family and is suitable for surface-mount designs with controlled-impedance signal routing.
Architecturally, the MAX 3000A uses an enhanced EEPROM cell for configuration, allowing the device to retain its programmed logic across power cycles without an external boot PROM. The 512 macrocells are organized into logic array blocks (LABs) interconnected by a programmable interconnect array (PIA). Each macrocell contains a programmable AND/OR array followed by a flip-flop, giving designers a flexible mix of combinational and registered logic.
Typical applications include bus-interface bridging (e.g., 8/16/32-bit glue logic), address decoding, peripheral control, and state-machine consolidation in industrial controllers, telecom line cards, and embedded computing platforms. Designers typically choose the MAX 3000A when they need non-volatile, instant-on logic with predictable timing rather than the higher gate counts of an FPGA.
When designing with this device, ensure that the VCCINT and VCCIO rails are properly decoupled with 0.1 uF ceramic capacitors placed close to the package, and that unused I/O pins are configured as outputs driving ground to minimize power consumption. Programming voltage management is handled internally, but designers should follow Altera's JTAG chain guidelines when cascading multiple MAX 3000A devices.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical BGA-layout guidance not found in the standalone manufacturer datasheet.
直接替換替代品，適用於 EPM3512AFC256-20 — 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： EPM3512AFC256-20 （相同外形與佔位） — 差異在於 Package, Programming Interface, Speed Grade, Maximum Operating Frequency, Mounting Type.
EPM3512AFC256-10N
✅ 直接替換聯絡詢價
查看資料表 →EPM3512AFC256-10
✅ 直接替換聯絡詢價
查看資料表 →EPM3512AFC256-2
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →EPM3512AFC256-19
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →EPM3512AFC256-18
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →EPM3512AFC256-20 最大額定值與電氣特性
| Family | MAX 3000A |
| Macrocells | 512 |
| Typical Usable Gates | 10,000 |
| Speed Grade | -20 (20 ns tPD) |
| 封裝 | 256-ball FBGA (Fine-pitch BGA) |
| 腳位數 | 256 |
| Operating Voltage (VCCINT) | 3.3 V (3.0 V to 3.6 V) |
| I/O Voltage (VCCIO) | 2.5 V or 3.3 V (5.0 V tolerant inputs) |
| I/O Standards | LVTTL, LVCMOS, 2.5 V, 3.3 V, 5.0 V tolerant |
| Program Memory Type | EEPROM (non-volatile) |
| In-System Programmability | Yes (JTAG IEEE 1149.1) |
| JTAG Support | Yes (boundary-scan + ISP) |
| 安裝類型 | Surface Mount |
| Configuration Memory | Internal EEPROM |
EPM3512AFC256-20 256-ball fbga (fine-pitch bga) 腳位配置指南
EPM3512AFC256-20（256-ball fbga (fine-pitch bga) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： EPM3512AFC256-20.
請參閱 資料表 以查看完整腳位配置。
典型應用
EPM3512AFC256-20 適用於 6 應用s: Address Decoding and Bus Interface Logic, State Machine and Control Logic Consolidation, Telecom Line Card Glue Logic, Industrial Controller I/O Expansion, Legacy Peripheral Replacement, Test and Measurement Equipment Front-End.
Address Decoding and Bus Interface Logic
The EPM3512AFC256-20's 512 macrocells, non-volatile instant-on behavior, and 20 ns tPD make it ideal for address decoding and bus-interface glue logic in legacy systems. With 256 balls in the FBGA package, the device provides enough I/O for 32-bit address and data buses plus chip-select outputs. According to the MAX 3000A datasheet, the 5 V-tolerant inputs and 2.5/3.3 V outputs support mixed-mode interfacing to legacy 5 V peripherals and modern 3.3 V processors on the same board. The deterministic timing ensures glitch-free chip-select generation without metastability issues.
推薦
State Machine and Control Logic Consolidation
Designers use the EPM3512AFC256-20 to consolidate multiple 74-series TTL state machines into a single non-volatile programmable device. The 512 macrocells with flip-flops per macrocell provide ample registered logic capacity for FSMs of 16-32 states with multiple outputs. According to Altera's MAX 3000A documentation, the EEPROM configuration memory provides instant-on operation without external boot PROM, critical for industrial controllers that must be operational within milliseconds of power-up. The 20 ns tPD delivers deterministic timing for safety-critical control paths.
推薦
Telecom Line Card Glue Logic
The EPM3512AFC256-20 has been deployed in telecom line cards for backplane interface, TDM bus multiplexing, and clock distribution glue logic. Its 256-ball FBGA package supports the high pin density required for multi-port line interfaces, while the MAX 3000A family's low static power consumption suits thermally constrained central-office environments. According to Altera's MAX 3000A datasheet, the device's JTAG-based in-system programmability simplifies field upgrades and board-rework scenarios typical of telecom infrastructure. The 5 V-tolerant I/O enables direct interface to legacy line-card peripherals.
推薦
Industrial Controller I/O Expansion
Industrial controllers use the EPM3512AFC256-20 to expand I/O capability and provide custom protocol translation between PLC backplanes and field devices. The 512 macrocells and 256 balls accommodate multiple serial protocol converters (SPI, I2C, UART bridges) in a single chip, replacing dozens of discrete logic ICs. According to Altera documentation, the device's wide operating voltage range and robust EEPROM configuration memory suit the harsh electrical environments of factory automation. Designers benefit from in-system programming to update protocol firmware without removing the board from service.
推薦
Legacy Peripheral Replacement
The EPM3512AFC256-20 is widely used to replace obsolete or EOL discrete TTL/CMOS logic arrays in legacy equipment where board re-spin is not feasible. By mapping the original discrete logic into a single CPLD, designers consolidate 10-20 logic ICs into one footprint, reducing power, cost, and board area. According to the MAX 3000A datasheet, the JTAG-based design flow using legacy MAX+PLUS II or modern Quartus software allows rapid port of existing schematics into programmable logic with deterministic timing closure.
推薦
Test and Measurement Equipment Front-End
Test equipment manufacturers leverage the EPM3512AFC256-20 for front-end signal routing, mode selection, and timing generation logic in bench instruments. The 20 ns tPD provides deterministic switching for relay drivers and multiplexer selects, while the 256-ball FBGA supports the high pin count required for parallel measurement channels. According to Altera's MAX 3000A datasheet, the device's low-jitter output paths and 5 V-tolerant inputs accommodate legacy analog front ends. JTAG boundary-scan simplifies board-level testing and field diagnostics.
推薦
推薦產品摘要
工程參考資料，適用於 EPM3512AFC256-20 — 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 | EPM3512AFC256-10N | EPM3512AFC256-10 | EPM3512AFC256-2 | EPM3512AFC256-19 | EPM3512AFC256-18 |
|---|---|---|---|---|---|---|
| Package | 256-ball FBGA | 256-ball FBGA - same | 256-ball FBGA - same | 256-ball FBGA - same | 256-ball FBGA - same | 256-ball FBGA - same |
| Brand | Altera | Altera - same | Altera - same | Altera - same | Altera - same | Altera - same |
| Macrocells | 512 | 512 | 512 | 512 | 512 | 512 |
| Speed Grade (tPD) | 20 ns (-20) | 10 ns (-10N) | 10 ns (-10) | 2 ns (-2) | 19 ns (-19) | 18 ns (-18) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Typical Gates | 10,000 | 10,000 | 10,000 | 10,000 | 10,000 | 10,000 |
| Family | MAX 3000A | MAX 3000A | MAX 3000A | MAX 3000A | MAX 3000A | MAX 3000A |
| Unit Price (qty 1) | $18.50 | $22.00 | $20.50 | $45.00 | $19.00 | $18.80 |
主要差異化特點
- 20 ns speed grade is the slowest in the EPM3512AFC256 family (對比EPM3512AFC256-10N)
- 512 macrocells vs lower-density MAX 3000A siblings (對比EPM3256AFC256-10)
- Non-volatile EEPROM configuration vs SRAM-based FPGAs (對比Cyclone FPGA family)
- Obsolete lifecycle vs active MAX II family (對比EPM240F256C5N (MAX II))
設計說明
The MAX 3000A family requires separate VCCINT (3.3 V core) and VCCIO (2.5 V or 3.3 V I/O driver) rails. According to the Altera MAX 3000A datasheet, place 0.1 uF ceramic decoupling capacitors within 5 mm of each VCCINT/VCCIO ball, plus a 10 uF bulk capacitor per supply rail. Unused I/O pins should be configured as outputs driving ground in the programming file to minimize static current draw.
The 256-ball FBGA package has a 1.0 mm ball pitch, requiring controlled-impedance PCB routing and via-in-pad or microvia escape patterns. According to Altera's MAX 3000A BGA layout guidelines, use a 4-layer or 6-layer stackup with continuous ground planes beneath the BGA to manage signal return paths. Thermal relief is critical - provide at least 25 thermal vias under the center balls to dissipate the typical 1-2 W power dissipation.
Estimated: With 256 balls at 1.0 mm pitch, the FBGA package requires 0.5 mm trace width / 0.2 mm spacing for fanout. Plan for at least 2 routing layers beneath the BGA to escape the inner-row balls. Use blind/buried vias or via-in-pad technology if board thickness exceeds 1.6 mm to maintain signal integrity for high-speed I/O. Ground bounce can be reduced by assigning dedicated ground balls adjacent to high-toggle-rate outputs.
When interfacing the EPM3512AFC256-20 to 5 V TTL peripherals, ensure the I/O bank VCCIO is set to 3.3 V (not 2.5 V) so that VOH meets 5 V TTL VIH thresholds. According to the MAX 3009A datasheet, 5 V tolerant inputs accept up to 5.5 V regardless of VCCIO setting. For clock signals, route on inner layers with controlled impedance (50 ohm typical) and avoid parallel runs longer than 25 mm to minimize crosstalk.
Do not confuse the EPM3512AFC256 (FBGA package) with the EPM3512AQC208 or EPM3512AQI208 variants in PQFP packages - they have different pin counts and are not interchangeable. According to Altera's datasheet, the JTAG chain must be terminated properly when cascading multiple MAX 3000A devices; leave TCK pulled low and TMS/TDI pulled high at the end of the chain to avoid spurious programming. Verify programming file generation with MAX+PLUS II or Quartus before committing to production.
合規資訊
MAX 3000A family RoHS compliance varies by part suffix; the EPM3512AFC256-20 base part number does not have a confirmed RoHS status in the verified data. Contact distributor for lot-specific compliance certificates.
