P89LPC921FDH
IC MCU 8BIT 4KB FLASH 20TSSOP
Embedded Microcontrollers
20-TSSOP (0.173", 4.40mm Width)
LPC900
Active
$6.61 / unit (market reference)
MOQ: 46 pcs
Submit your quantity via the inquiry form for a competitive quote within 24 hours.
Parameters
| Parameter | Value |
|---|---|
| Brand | Rochester Electronics, LLC |
| Model | P89LPC921FDH |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Core Processor | 8051 |
| Speed | 18MHz |
| Program Memory Size | 4KB (4K x 8) |
| RAM Size | 256 x 8 |
| Number of I/O | 18 |
| Voltage - Supply | 2.4V ~ 3.6V |
| Connectivity | I²C, UART/USART |
| Peripherals | Brown-out Detect/Reset, LED, POR, PWM, WDT |
| Supplier Device Package | 20-TSSOP |
| RoHS | RoHS |
| Part Status | Active |
Application & Notes
P89LPC921FDH by Rochester Electronics, LLC is a 8051 microcontroller widely used in industrial control, motor drives, IoT devices, 3D printer mainboards, and consumer electronics. The 20-TSSOP (0.173", 4.40mm Width) package fits automated SMT assembly. Operating temperature is -40°C ~ 85°C (TA) — verify your application environment. Pin-compatible domestic alternatives include GigaDevice GD32 series and Artery AT32 series — note GD32 ADC specs may differ slightly from ST originals.
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All Technical Specifications
| Speed | 18MHz |
| RAM Size | 256 x 8 |
| Core Size | 8-Bit |
| Peripherals | Brown-out Detect/Reset, LED, POR, PWM, WDT |
| Connectivity | I²C, UART/USART |
| Number of I/O | 18 |
| Core Processor | 8051 |
| Oscillator Type | Internal |
| Program Memory Size | 4KB (4K x 8) |
| Program Memory Type | FLASH |
| Voltage - Supply (Vcc/Vdd) | 2.4V ~ 3.6V |
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