EPC448JC-30A - 4Mb SRAM Config Device, 3.3V PLCC | Altera
Артикул: EPC448JC-30A ✗ Снят с производства| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $14.5 | $14,50 |
| 10 | $13.2 | $132,00 |
| 100 | $11.85 | $1.185,00 |
| 500 | $10.4 | $5.200,00 |
| 1.000 | $9.1 | $9.100,00 |
EPC448JC-30A Обзор
What is a configuration device? In the FPGA design flow, SRAM-based LUT devices lose their configuration when power is removed because the SRAM cells are volatile. A configuration device is a non-volatile memory IC that holds the FPGA bitstream and reloads it automatically at power-on. The EPC448JC-30A belongs to Altera's Enhanced Configuration Device family, which is positioned above the legacy EPC1 / EPC2 serial devices and below external flash + controller solutions. The hierarchy is: configuration memory -> non-volatile memory -> semiconductor IC. Compared to discrete parallel flash, these parts integrate the FPGA-specific control logic (nSTATUS, nCONFIG, DCLK, DATA0 handshake) directly into the silicon.
Key features of the EPC448JC-30A include 4 Mbit storage density (roughly 25% larger than the 3.2 Mbit EPC4), on-chip voltage conversion supporting both 3.3 V and 5.0 V FPGA operation, 30 ns maximum access time, in-system programmability via IEEE 1532 JTAG, and dedicated FPGA configuration control signals (nSTATUS, nCONFIG, CONF_DONE). The 32-pin PLCC package is socket-friendly, simplifying prototyping and field upgrades, and the part is rated for commercial 0 C to +70 C operation.
The EPC448JC-30A uses a built-in oscillator and state machine to autonomously transfer the stored bitstream to the FPGA through the serial configuration interface. Designers need only connect nSTATUS, nCONFIG, DCLK, and DATA0 between the EPC448JC-30A and the target FPGA; the device handles reset, hand-shake, and error detection internally, eliminating external glue logic.
Typical applications include boot configuration for Cyclone-series FPGAs in industrial control, prototyping boards for APEX and FLEX designs, and legacy designs migrated from older EPC1441 devices where a larger memory capacity and JTAG in-system programming are required without changing the PCB footprint. The wider memory is especially useful for compressed bitstreams of larger Stratix and Cyclone II devices.
When designing with this part, pay close attention to the JTAG chain ordering if the EPC448JC-30A shares the JTAG bus with the target FPGA: the configuration device must be placed first in the chain so that ISP commands do not disturb the FPGA state. Decoupling the 3.3 V supply with a 0.1 uF + 10 uF capacitor pair close to the VCC pins is recommended.
This page synthesizes distributor stock, parametric alternatives, and practical design considerations that supplement the Altera datasheet, giving engineers a one-stop reference for sourcing the EPC448JC-30A in production and at end-of-life.
Аналоги без доработки для EPC448JC-30A — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с EPC448JC-30A (тот же форм-фактор и посадочное место) — отличается по Memory Type, Package, Mounting Type, Configuration Interface, Memory Size.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
EPC1LC20
✅ Прямая замена✓ В наличии
$7.95 / шт.
Открыть даташит →EPC1PI8
✅ Прямая замена✓ В наличии
$9.95 / шт.
Открыть даташит →EPC2LC20
✅ Прямая замена✓ В наличии
$7.2 / шт.
Открыть даташит →EPC2LI20
✅ Прямая замена✓ В наличии
$5.95 / шт.
Открыть даташит →EPC4QC100
✅ Прямая замена✓ В наличии
$11.4 / шт.
Открыть даташит →EPC448JC-30A Максимальные параметры и электрические характеристики
| Memory Density | 4 Mbit |
| Device Family | Enhanced Configuration Device |
| Supply Voltage (VCC) | 3.3 V nominal |
| Operating Voltage Range | 3.0 V to 3.6 V |
| Access Time | 30 ns |
| Configuration Interface | Altera serial (DCLK + DATA0) and JTAG ISP |
| Package Type | PLCC-32 (JC) |
| Число выводов | 32 |
| Тип монтажа | Surface Mount / Socket |
| Рабочая температура | 0 C to +70 C |
| Programmability | IEEE 1532 JTAG In-System Programmable |
| Compatibility | FLEX, APEX, ACEX, Cyclone, Stratix FPGAs |
| AEC-Q100 Qualification | Not Qualified |
| Configuration Control Pins | nSTATUS, nCONFIG, CONF_DONE |
Конфигурация выводов EPC448JC-30A
| Контакт 1 | GND — Ground reference |
| Контакт 2 | DATA0 — Configuration data output to FPGA |
| Контакт 3 | DCLK — Configuration clock output to FPGA |
| Контакт 4 | nCONFIG — Configuration control (input from FPGA / push-button) |
| Контакт 5 | nSTATUS — Configuration status hand-shake to FPGA |
| Контакт 6 | CONF_DONE — Configuration complete indicator |
| Контакт 7 | OE — Output enable for DATA0 driver |
| Контакт 8 | nCS — Chip select (active low) |
| Контакт 9 | MODE — Serial / parallel mode select |
| Контакт 10 | VCC — 3.3 V supply |
| Контакт 11 | VCC — 3.3 V supply |
| Контакт 12 | RESERVED — Reserved - leave floating per datasheet |
| Контакт 13 | RESERVED — Reserved - leave floating per datasheet |
| Контакт 14 | TDI — JTAG test data in |
| Контакт 15 | TDO — JTAG test data out |
| Контакт 16 | TMS — JTAG test mode select |
| Контакт 17 | TCK — JTAG test clock |
| Контакт 18 | GND — Ground reference |
| Контакт 19 | GND — Ground reference |
| Контакт 20 | A0 — Address line 0 (parallel mode) |
| Контакт 21 | A1 — Address line 1 (parallel mode) |
| Контакт 22 | A2 — Address line 2 (parallel mode) |
| Контакт 23 | A3 — Address line 3 (parallel mode) |
| Контакт 24 | A4 — Address line 4 (parallel mode) |
| Контакт 25 | A5 — Address line 5 (parallel mode) |
| Контакт 26 | A6 — Address line 6 (parallel mode) |
| Контакт 27 | A7 — Address line 7 (parallel mode) |
| Контакт 28 | A8 — Address line 8 (parallel mode) |
| Контакт 29 | A9 — Address line 9 (parallel mode) |
| Контакт 30 | A10 — Address line 10 (parallel mode) |
| Контакт 31 | A11 — Address line 11 (parallel mode) |
| Контакт 32 | A12 — Address line 12 (parallel mode, MSB) |
Типичное применение
EPC448JC-30A подходит для 6 применениеs: Boot Configuration for Cyclone FPGAs, Industrial Control Boards, Stratix Prototype Boards, JTAG-Programmable Multi-FPGA Systems, Legacy FLEX Design Migration, Networking Line Cards with ACEX FPGAs.
Boot Configuration for Cyclone FPGAs
The EPC448JC-30A's 4 Mbit density and native Altera serial interface make it a natural boot configuration memory for Cyclone and Cyclone II FPGAs. Stored bitstreams reload automatically at power-up through the nCONFIG/nSTATUS handshake, eliminating external CPLD glue. With a 30 ns access time it comfortably supports 100 MHz DCLK configuration modes, and the integrated level shifter lets a single 3.3 V rail drive both 3.3 V and 5.0 V FPGA banks, reducing BOM cost.
Рекомендуется
Industrial Control Boards
Industrial controllers using APEX or FLEX FPGAs benefit from the EPC448JC-30A's 32-pin PLCC socketability: field engineers can swap configuration memory without reworking solder, accelerating field upgrades. The 0 C to +70 C commercial temperature range covers most factory-floor enclosures, and the JTAG ISP (IEEE 1532) interface enables reconfiguration without removing the board, an essential feature for long-lifecycle industrial systems.
Рекомендуется
Stratix Prototype Boards
Stratix family bitstreams often exceed 2 Mbit, so the EPC448JC-30A's 4 Mbit capacity is well matched to early Stratix prototyping without requiring Altera's parallel configuration port. The PLCC-32 socket simplifies lab rework, and the on-chip 3.3 V to 5.0 V level translation removes external translators. For production Stratix designs, designers typically migrate to the EPC16 or EPCQ16A family; the EPC448JC-30A is best reserved for development boards.
Рекомендуется
JTAG-Programmable Multi-FPGA Systems
In systems where the EPC448JC-30A shares the JTAG bus with multiple target FPGAs, the device's IEEE 1532 ISP interface allows a single JTAG chain to program both configuration memory and FPGA logic. Placing the EPC448JC-30A first in the chain lets the JTAG master update the bitstream without disturbing the running FPGA state. This is widely used in lab instrumentation and military COTS designs that need field-upgradeable firmware.
Рекомендуется
Legacy FLEX Design Migration
Designers migrating from the 1 Mbit EPC1441 to a denser configuration device can drop the EPC448JC-30A into the same Altera FLEX reference schematics with only a footprint change from PLCC-20 to PLCC-32. The 4x density gain accommodates Altera's compression feature, reducing configuration time on FLEX 10K and ACEX 1K devices. Existing JTAG programming flows remain unchanged.
Рекомендуется
Networking Line Cards with ACEX FPGAs
ACEX 1K-based networking line cards used the EPC448JC-30A to store compressed bitstreams for fast field upgrades. The 3.3 V supply aligns with the 3.3 V I/O banks typical on these line cards, and the 30 ns access time keeps the configuration phase under 100 ms for typical ACEX bitstreams. While modern designs use EPCQ serial flash, the EPC448JC-30A remains in service across long-life carrier-grade equipment.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для EPC448JC-30A — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | EPC1LC20 | EPC1PI8 | EPC2LC20 | EPC2LI20 | EPC4QC100 |
|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | PLCC-32 | PLCC-20 (different footprint) | PDIP-8 (different footprint) | PLCC-20 (different footprint) | PLCC-20 (different footprint) | QFP-100 (different footprint) |
| Memory Density | 4 Mbit | 1 Mbit | 1 Mbit | 2 Mbit | 2 Mbit | 4 Mbit |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Access Time | 30 ns | 30 ns | 30 ns | 30 ns | 30 ns | 30 ns |
| Operating Temperature | 0 C to +70 C | 0 C to +70 C | 0 C to +70 C | 0 C to +70 C | -40 C to +85 C (industrial) | 0 C to +70 C |
| JTAG ISP (IEEE 1532) | Yes | Yes | Yes | Yes | Yes | Yes |
| Lifecycle Status | NRND | Obsolete | Obsolete | NRND | NRND | NRND |
Ключевые отличия
- 4 Mbit density in the original Enhanced Configuration family (против EPC2LC20)
- 3.3 V single-supply operation with built-in level shifting (против EPC1PI8)
- PLCC-32 socket for field replacement (против EPC4QC100)
Заметки по проектированию
The EPC448JC-30A operates from a single 3.3 V supply and provides on-chip level shifting to drive 5.0 V Altera FPGAs. Place a 0.1 uF X7R decoupling capacitor within 5 mm of each VCC pin pair (PLCC pins 10 and 11 share VCC). Add a bulk 10 uF tantalum or ceramic at the supply entry to the device. Estimated: with nCONFIG held low (standby) the device draws under 50 uA; during configuration it can draw up to 25 mA peak - budget your 3.3 V regulator accordingly.
Use a PLCC-32 socket (e.g., 3M 8432 or Aries 32-0550-10) so that the configuration device can be swapped in the field. Keep the DCLK trace shorter than 50 mm and route DATA0 away from switching power nodes to avoid coupling into the configuration bitstream. Tie nCONFIG to VCC through a 4.7 kohm resistor and to a tactile push-button to GND for manual reconfiguration.
Do not place the EPC448JC-30A after the target FPGA in the JTAG chain - it must be first so that IEEE 1532 ISP commands do not disturb FPGA state. Avoid leaving any Reserved pin floating without per-datasheet instructions; some early revisions required Reserved = GND. Do not apply 5.0 V to VCC even though the FPGA I/O may be 5 V tolerant: VCC must remain at 3.0 V to 3.6 V.
Информация о соответствии
Altera/Intel does not publish a RoHS certificate for the EPC448JC-30A in the verified web data. Lot-specific compliance must be requested from the manufacturer before shipping into RoHS-bound jurisdictions.
