Introduce the features and characteristics of 4338F-USB
The AT89C5131A-L is an 8‑bit microcontroller based on the 80C52 core, offering up to 48 MHz core frequency, 16/32 KB on‑chip flash, 256 B RAM and an additional 1 KB ERAM. It integrates a full‑speed USB 1.1/2.0 module, multiple timers, a programmable counter array, UART, SPI, TWI and direct‑drive LED outputs.
The device is supplied in 28‑pin SO, 52‑pin PLCC and 64‑pin VQFP packages, operates from 2.7 V to 3.6 V, and is rated for industrial temperature ranges. Detailed pin‑outs, signal tables and USB controller specifications are provided throughout the document.
| Core Frequency | 48 MHz (X1 mode) / 24 MHz (X2 mode) |
|---|---|
| Flash Memory | 16 KB or 32 KB on‑chip flash EEPROM |
| USB Support | USB 1.1 and 2.0 Full‑Speed compliant |
| Timers | Three 16‑bit timers/counters (T0, T1, T2) |
| Programmable Counter Array | 5‑channel PCA with 16‑bit counters |
| Operating Voltage | 2.7 V to 3.6 V (3.0 V to 3.6 V required for USB) |
| Package Options | 28‑pin SO, 52‑pin PLCC, 64‑pin VQFP |
| Temperature Range | Industrial temperature range |
It supports full‑speed USB 1.1 and 2.0 specifications.
The device provides either 16 KB or 32 KB of on‑chip flash EEPROM.
It operates from 2.7 V to 3.6 V, with 3.0 V to 3.6 V required for USB operation.
The microcontroller is available in 28‑pin SO, 52‑pin PLCC, and 64‑pin VQFP packages.