Key facts
- Brand
- STMicroelectronics
- Model
- PSD4235G2
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-04
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STMicroelectronics PSD4235G2V User Manual
This manual describes the PSD4235G2V flash‑in‑system programmable peripheral, including its dual‑bank flash memories, battery‑backed SRAM, and programmable logic blocks. It outlines the architecture, pin assignments, power‑management features, and the JTAG‑based programming interface.
The document also covers In‑System Programming (ISP) via JTAG, In‑Application Programming (IAP) using the dual flash banks, and detailed register descriptions, timing tables, and development tools such as PSDsoft Express.
STMicroelectronics PSD4235G2 specifications
| Primary Flash Memory | 4 Mbit (8 sectors, 32K x 16) |
|---|---|
| Secondary Flash Memory | 256 Kbit (4 sectors) |
| SRAM | 64 Kbit battery‑backed |
| PLD Gate Count | over 3000 gates |
| CPLD Macrocell Count | 16 Output, 24 Input |
| I/O Pins | 52 individually configurable pins |
| Supply Voltage | 3.38 V ±10% |
| Memory Access Time | 90 ns |
| Flash Endurance | 100,000 erase/write cycles |
| PLD Endurance | 1,000 erase/write cycles |
| Data Retention | 15 years |
All STMicroelectronics PSD4235G2 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the purpose of the secondary Flash memory?
The secondary Flash memory can be used to execute code while the primary Flash is being erased or programmed, enabling concurrent read/write operations during In‑Application Programming (IAP).
What supply voltage does the PSD4235G2V require?
It operates from a single 3.38 V supply with a ±10 % tolerance.
How many I/O pins does the PSD4235G2 provide?
It provides 52 individually configurable I/O pins.
From: STMicroelectronics PSD4235G2 Flash ISP Peripheral Manual
What is the flash memory endurance of the PSD4235G2?
The flash memory is rated for 100,000 erase/write cycles.
From: STMicroelectronics PSD4235G2 Flash ISP Peripheral Manual