| Parameter | Value / Description | |-----------|----------------------| | | 8051-compatible, single-cycle, up to 25 MHz | | Operating Voltage | 3.3V core / 3.3V I/O (5V tolerant on select pins) | | Package Type | LQFP-48 (0.5mm pitch) | | Temperature Range | 0°C to +70°C (commercial) or -40°C to +85°C (industrial, check suffix) | | Host Interface | LPC (Low Pin Count) v1.1 compliant | | GPIO Pins | Up to 36 programmable I/Os | | Analog Inputs | 8-channel, 10-bit ADC | | PWM Channels | 4 channels for fan speed control | | Timers/Counters | 3 x 16-bit timers, Watchdog timer | | On-chip Memory | 256 bytes internal RAM, 8 KB code SRAM (shadowable from flash) | | Special Functions | PS/2 controller, SMBus/I2C, SPI master |
If you are debugging a motherboard that fails to POST (Power-On Self-Test), incorrect LPC timing between the EC and Southbridge is a common fault. The datasheet provides setup/hold times. Winbond Wpce773la0dg Datasheet Pdf Download