EPM7256SQC208-10 - MAX 7000 CPLD 256 Macrocell 10ns | Intel
料号： EPM7256SQC208-10 ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
EPM7256SQC208-10 概述
A CPLD (Complex Programmable Logic Device) is a programmable logic IC that combines the architectural flexibility of a PAL with the density and register resources of an FPGA. Within the logic IC hierarchy, a CPLD sits between simple programmable logic devices (SPLDs) and field-programmable gate arrays (FPGAs), and is classified as a programmable logic device (PLD) under digital logic ICs. MAX 7000 devices use EEPROM configuration cells, so they retain their programmed state through power cycles without an external configuration memory.
The EPM7256SQC208-10 delivers 256 macrocells organized into 16 logic array blocks (LABs), each containing 16 macrocells. Its 10 ns tPD supports system clock rates up to approximately 100 MHz for simple logic paths, while the 164 I/O pins make it suitable for wide bus interfacing. The device operates from a single 5.0 V supply with 3.3 V and 5.0 V tolerant I/O, and supports JTAG (IEEE 1149.1) boundary-scan programming and ISP.
Typical applications include address decoding and bus bridging in embedded systems, glue logic for legacy 5 V designs, industrial control interfaces, and prototyping where deterministic timing is required. The 208-pin PQFP package is a standard surface-mount footprint that supports automated assembly.
When designing with this CPLD, note that the 10 ns speed grade is the slowest of the MAX 7000 family, so timing-critical paths should be verified against the device's timing model. The EEPROM configuration requires no external boot PROM, simplifying board bring-up compared with SRAM-based FPGAs.
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 selection and replacement decisions.
直接替换替代料： EPM7256SQC208-10 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： EPM7256SQC208-10 （相同外形与封装尺寸） ——差异在于 Package, Speed Grade, RoHS Status, Usable Gates, Configuration Memory.
快速对比工具——选择替代料号进行并排对比：
EPM7256SQC208-7
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →EPM7256SQC208-15
✅ 直接替换✓ 有现货
$3.65 / 个
查看数据手册 →EPM7256SQC208-7N
✅ 直接替换✓ 有现货
$27.2 / 个
查看数据手册 →EPM7256SQC208-15N
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →EPM7256SQC208-10N
✅ 直接替换📋 参考替代料（不在目录中）
EPM7256SQC208-10 最大额定值与电气特性
| Device Type | Complex Programmable Logic Device (CPLD) |
| Family / Series | MAX 7000 |
| Macrocells | 256 |
| Logic Array Blocks (LABs) | 16 |
| Usable Gates | 5000 |
| User I/O Pins | 164 |
| Pin-to-Pin Propagation Delay (tPD) | 10 ns |
| 电源电压 | 5.0 V |
| Configuration Technology | EEPROM |
| 封装 | 208-pin PQFP |
| 安装类型 | Surface Mount |
| JTAG Support | IEEE 1149.1 boundary-scan |
| In-System Programmability | Yes (ISP) |
| Speed Grade | -10 (10 ns) |
EPM7256SQC208-10 208-pin pqfp 引脚配置指南
EPM7256SQC208-10（208-pin pqfp 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： EPM7256SQC208-10.
请参阅 数据手册 以查看完整引脚配置。
典型应用
EPM7256SQC208-10 适用于 6 应用s: Legacy 5V Bus Interface and Address Decoding, Industrial Control and Automation Glue Logic, Embedded System Glue Logic and Chip-Select Generation, Telecommunications Line Card Logic, Test and Measurement Instrumentation Logic, Prototyping and Legacy Design Migration.
Legacy 5V Bus Interface and Address Decoding
The EPM7256SQC208-10 fits legacy 5 V bus interfacing because it operates from a single 5.0 V supply and provides 164 user I/O pins, enough to bridge wide address and data buses without external level shifters. Its 256 macrocells implement address decoders, chip-select generators, and wait-state logic that would otherwise require dozens of discrete 74-series devices. With a 10 ns pin-to-pin delay, the device resolves combinational decode paths within a single bus cycle at typical legacy bus speeds. Because MAX 7000 uses EEPROM configuration, the decode logic is live immediately at power-up with no external configuration PROM, which simplifies board bring-up in industrial and telecom equipment. The trade-off is that the 10 ns speed grade limits the maximum clock rate for complex registered paths, so designers should verify setup and hold margins against the MAX 7000 timing model.
推荐
Industrial Control and Automation Glue Logic
In industrial control systems, the EPM7256SQC208-10 consolidates glue logic such as state machines, encoder interfaces, and inter-chip handshaking into a single 208-pin PQFP device. Its 256 macrocells and 164 I/O pins allow multiple peripheral interfaces to be integrated, reducing board area and component count compared with discrete logic. The 5.0 V supply matches the signaling of many industrial sensors and legacy controllers, avoiding level-translation circuitry. EEPROM configuration means the logic survives power interruptions without reloading, an advantage in factory environments where deterministic startup matters. The 10 ns tPD supports moderate-speed control loops, while the device's IEEE 1149.1 JTAG support enables in-system reprogramming during field upgrades. Designers should account for the PQFP package's thermal and layout requirements and verify that the 10 ns grade meets the worst-case control-loop timing.
推荐
Embedded System Glue Logic and Chip-Select Generation
The EPM7256SQC208-10 is commonly used as glue logic around microprocessors and microcontrollers, generating chip selects, wait states, and bus arbitration signals. With 256 macrocells, it can implement multiple peripheral decoders and programmable wait-state generators in one device, replacing several discrete PLDs. The 164 I/O pins accommodate wide address and data buses typical of 16-bit and 32-bit embedded processors. Its 10 ns tPD keeps combinational decode delays short enough for moderate bus frequencies, and the EEPROM architecture eliminates the configuration memory that SRAM-based FPGAs require. Because the device is a 5.0 V part, it pairs naturally with legacy 5 V processors. Engineers should confirm that the 10 ns grade satisfies the processor's address setup and hold requirements, and consider the -7 grade if additional timing margin is needed.
推荐
Telecommunications Line Card Logic
Telecommunications line cards often require programmable glue logic for framing, timeslot interchange, and backplane interfacing. The EPM7256SQC208-10 provides 256 macrocells and 164 I/O pins to implement these functions in a single 208-pin PQFP, reducing board complexity. Its 5.0 V operation matches many legacy telecom backplanes, and the 10 ns tPD supports the moderate clock rates typical of T1/E1 and older SONET interfaces. EEPROM configuration ensures the logic is active immediately after power-up, which is important for line cards that must initialize quickly. The device's JTAG boundary-scan support aids manufacturing test and in-field reprogramming. Designers should verify that the 10 ns speed grade meets the line card's worst-case timing across the full operating temperature range, and consider the -7 grade for higher-margin designs.
推荐
Test and Measurement Instrumentation Logic
Test and measurement instruments frequently need programmable logic for trigger generation, counter/timer functions, and interface sequencing. The EPM7256SQC208-10 offers 256 macrocells and 164 I/O pins to implement these functions, with a 10 ns tPD that supports moderate-speed trigger and timing paths. Its 5.0 V supply suits instruments built around legacy 5 V logic, and EEPROM configuration means the instrument's logic is ready at power-on without a configuration PROM. The 208-pin PQFP package is compatible with standard surface-mount assembly. Because instrumentation often requires deterministic timing, designers should validate the 10 ns grade against the instrument's timing budget and select the -7 grade if additional margin is needed. JTAG support simplifies in-system updates during calibration or firmware revisions.
推荐
Prototyping and Legacy Design Migration
The EPM7256SQC208-10 is useful for prototyping and migrating legacy designs because its 256 macrocells and 164 I/O pins can absorb logic from multiple obsolete PLDs. Engineers can consolidate several small glue-logic devices into one 208-pin PQFP, reducing board rework during redesigns. The 5.0 V supply and EEPROM configuration simplify integration into existing 5 V systems, and the 10 ns tPD is adequate for most legacy logic paths. Because MAX 7000 is an older family, the device is best suited to maintaining existing designs rather than new high-performance development. Designers should confirm availability and consider the -7 or -15 speed grades as pin-compatible alternatives, and evaluate migration to a newer CPLD family for long-term production.
推荐
推荐产品汇总
工程参考数据： EPM7256SQC208-10 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | EPM7256SQC208-7 | EPM7256SQC208-15 | EPM7256SQC208-7N | EPM7256SQC208-15N | EPM7256SQC208-10N |
|---|---|---|---|---|---|---|
| Package | 208-pin PQFP | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same |
| Brand | Intel | Intel | Intel | Intel | Intel | Intel |
| Pin-to-Pin Delay (tPD) | 10 ns | 7 ns | 15 ns | 7 ns | 15 ns | 10 ns |
| Macrocells | 256 | 256 | 256 | 256 | 256 | 256 |
| User I/O Pins | 164 | 164 | 164 | 164 | 164 | 164 |
| Supply Voltage | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V |
| Usable Gates | 5000 | 5000 | 5000 | 5000 | 5000 | 5000 |
| Lead-Free (N Suffix) | No | No | No | Yes | Yes | Yes |
| Configuration Technology | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM |
关键差异点
- Balanced speed grade for legacy 5 V designs （对比 EPM7256SQC208-15)
- Lower cost than the fastest grade （对比 EPM7256SQC208-7)
- Non-volatile EEPROM configuration （对比 EPM7256SQC208-7N)
设计说明
The EPM7256SQC208-10 operates from a single 5.0 V supply and should be decoupled with at least one 0.1 uF ceramic capacitor per power pin, placed as close to the package as possible. Because the device is a 5 V CPLD with 164 I/O pins, simultaneous switching of many outputs can cause supply droop; add bulk capacitance (10 uF or larger) near the device to absorb transient current. Verify the supply stays within the MAX 7000 recommended operating range under worst-case I/O loading.
Estimated: the 208-pin PQFP package has a typical junction-to-ambient thermal resistance in the range of 30-40 C/W depending on board copper area. At a typical operating power of roughly 0.5 W, the junction temperature rise above ambient is approximately 15-20 C. Provide adequate copper area under the package and ensure airflow in enclosed industrial enclosures. These figures are estimates based on typical PQFP thermal behavior, not datasheet values; confirm against the MAX 7000 thermal model.
Do not assume the 10 ns speed grade meets all timing paths. The EPM7256SQC208-10 is the slower MAX 7000 grade, so registered and complex combinational paths may exceed the 10 ns tPD. Always run timing analysis with the MAX 7000 timing model and verify setup/hold margins. Also confirm the programming file targets the correct speed grade, since substituting a -7 or -15 part changes timing. Because the device is an older family, verify lifecycle and availability before committing to production.
合规信息
Compliance data was not present in the verified web data. The non-N suffix part (EPM7256SQC208-10) is a leaded variant; lead-free versions carry the N suffix (e.g., EPM7256SQC208-10N). Confirm RoHS/REACH status with the manufacturer or distributor before use.