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TE
CH
T81L0003B
8-bit MCU
1. Features
Compatible with MCS-51
Embedded 8K Bytes OTP ROM
256 x 8-bit Internal RAM
13 Programmable I/O Lines for 18-pin
Package
2 16-bit Timer/Counter & 1 16-bit Timer
2 External Interrupt Input
Programmable Serial UART Interface
Low Power Idle & Power-down Modes
Watch-dog Timer
On-chip Crystal & RC Oscillator (Selected
by Bonding Option)
Internal Power-on Reset and External Reset
Supported
SOP18/DIP18 Package
3.3V Operating Voltage
2. General Description
The T81L0003B is 8-bit microcontroller
designed and developed with low power and high
speed CMOS technology. It contains a 8K bytes
OTP ROM, a 256 × 8 RAM, 13 I/O lines, a
watchdog timer, two 16-bit counter/timers, a
seven source, two-priority level nested interrupt
structure, a full duplex UART, and an on-chip
oscillator and clock circuits.
In addition, the T81L0003B has two selectable
modes of power reduction-idle mode and
power-down mode. The idle mode freezes the
CPU while allowing the RAM, timers, serial port,
and interrupt system to continue functioning. The
power-down mode saves the RAM contents but
freezes the oscillator, causing all other chip
functions to be inoperative.
TM Technology Inc. reserves the right
to change products or specifications without notice.
P. 1
Publication Date: NOV. 2005
Revision:A
TMT [ TAIWAN MEMORY TECHNOLOGY ]
