Factory Lead Time  

10 Weeks

Contact Plating  

Tin

Mount  

Surface Mount

Mounting Type  

Surface Mount

Package / Case  

44-TQFP

Number of Pins  

44

Number of I/Os  

32

ROM(word)  

20480

Watchdog Timers  

Yes

Operating Temperature  

-40°C~85°C TA

Packaging  

Tray

Series  

89C

Published  

1996

JESD-609 Code  

e3

Pbfree Code  

yes

Part Status  

Active

Moisture Sensitivity Level (MSL)  

3 (168 Hours)

Number of Terminations  

44

Voltage - Supply  

5V

Terminal Position  

QUAD

Terminal Form  

GULL WING

Peak Reflow Temperature (Cel)  

260

Terminal Pitch  

0.8mm

Frequency  

24MHz

Time@Peak Reflow Temperature-Max (s)  

40

Base Part Number  

AT89C55

Power Supplies  

5V

Interface  

UART, USART

Memory Size  

20kB

Oscillator Type  

Internal

RAM Size  

256 x 8

uPs/uCs/Peripheral ICs Type  

MICROCONTROLLER

Core Processor  

8051

Peripherals  

WDT

Program Memory Type  

FLASH

Core Size  

8-Bit

Program Memory Size  

20KB 20K x 8

Connectivity  

UART/USART

Bit Size  

8

Access Time  

24 μs

Has ADC  

NO

DMA Channels  

NO

Data Bus Width  

8b

PWM Channels  

NO

DAC Channels  

NO

Number of Timers/Counters  

3

Number of UART Channels  

1

Height  

1.05mm

Length  

10.1mm

Width  

10.1mm

REACH SVHC  

No SVHC

Radiation Hardening  

No

RoHS Status  

ROHS3 Compliant

Lead Free  

Lead Free