Specification	SST89E54RD2A-40-C-TQJE-T

Connectivity	EBI, EMI, SPI, USART, UART
Core Processor	8051
Core Size (Bit Width)	8 Bit
Mounting Type	Surface Mount
Number of I/O	36
Operating Temperature (Max)	70 °C
Operating Temperature (Min)	0 °C
Oscillator Type	External
Package / Case	44-TQFP
Package Length	10 mm
Package Name	44‑TQFP
Package Width	10 mm
Peripherals	Brown-out Detect, WDT, POR, Reset
Program Memory Depth	24 K
Program Memory Size	24 KB
Program Memory Size	24KB
Program Memory Type	FLASH
Program Memory Width	8 bit
RAM Size Depth	1 K
RAM Size Width	8 bit
Speed	40 MHz
Voltage - Supply (Vcc/Vdd) Maximum	5.5 V
Voltage - Supply (Vcc/Vdd) Minimum	4.5 V

SST89E54RD2A Series

Part	Voltage - Supply (Vcc/Vdd) Maximum	Voltage - Supply (Vcc/Vdd) Minimum	Connectivity	Package / Case	RAM Size Depth	RAM Size Width	Package Width	Package Name	Package Length	Speed	Program Memory Size	Program Memory Size	Program Memory Depth	Program Memory Width	Core Size (Bit Width)	Operating Temperature (Max)	Number of I/O	Peripherals	Mounting Type	Program Memory Type	Core Processor	Oscillator Type
Microchip Technology SST89E54RD2A-40-C-TQJE	5.5 V	4.5 V	EBI EMI SPI UART USART	44-TQFP	1 K	8 bit	10 mm	44‑TQFP	10 mm	40 MHz	24 KB	24KB	24 K	8 bit	8 Bit	70 °C	36	Brown-out Detect POR Reset WDT	Surface Mount	FLASH	8051	External
Microchip Technology SST89E54RD2A-40-C-NJE	5.5 V	4.5 V	EBI EMI SPI UART USART	44-LCC (J-Lead)	1 K	8 bit	16.59 mm	44-PLCC	16.59 mm	40 MHz	24 KB	24KB	24 K	8 bit	8 Bit	70 °C	36	Brown-out Detect POR Reset WDT	Surface Mount	FLASH	8051	External
Microchip Technology SST89E54RD2A-40-C-TQJE-T	5.5 V	4.5 V	EBI EMI SPI UART USART	44-TQFP	1 K	8 bit	10 mm	44‑TQFP	10 mm	40 MHz	24 KB	24KB	24 K	8 bit	8 Bit	70 °C	36	Brown-out Detect POR Reset WDT	Surface Mount	FLASH	8051	External

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$	Updated

Digikey	N/A	0	$ 0.00	1m+

3D models and CAD resources for this part

General part information

8051 FlashFlex® Microcontroller IC 8-Bit 40MHz 24KB (24K x 8) FLASH 44-TQFP (10x10)

Technical documentation and resources