
TE
CH
tm
MCU    
1. Features 
                 T81L0006A/B
TM Technology Inc. reserves the right 
P. 1                
Publication Date: AUG. 2005 
to change products or specifications without notice.                                 Revsion : B
       8-bit A/D Type MCU 
! 
Compatible with MCS-51 
! 
Embedded 8K Bytes OTP ROM 
! 
128 x 8-bit Internal RAM 
! 
15/19 Programmable I/O Lines for 20/24-pin Package 
! 
Two 16-bit Timer/Counter & One 16-bit Timer 
! 
Two External Interrupt Input (Only One Input for 
20-pin Package) 
! 
Two Channel PWM (Only One Channel PWM for 
20-pin Package) Driving Capability up to 40 mA 
! 
Embedded 1k bits EEPROM (for T81L0006B only) 
! 
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 
! 
8-Channel 8-bit A/D Converter 
! 
SOP20/DIP20 & SOP24/DIP24 Package 
! 
3.3V Operating Voltage 
! 
EEPORM Interface 
! 
Low Voltage Reset
2.
 Applications 
Meter 
Household Appliances Controller 
Handwriting Board 
Charger 
Sport Devices 
Other Controller (Automotive, Toy…) 
3. General Description 
  The T81L0006A/B is 8-bit microcontroller designed and 
developed with low power and high speed CMOS 
technology. It contains a 8K bytes OTP ROM, a 128 × 8 
RAM, an 8-channels 8-bit A/D converter, 15/19 I/O lines, a 
watchdog timer, two 16-bit counter/timers, a seven source, 
two-priority level nested interrupt structure, two channel 
pulsed-width modulator (PWM), a full duplex UART, and 
an on-chip oscillator and clock circuits. 
  In addition, the T81L0006A/B 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. 
4. Order information 
Oscillator 
type 
T81L0006A-AK 
RC 
T81L0006A-BK 
Crystal 
T81L0006A-CK 
RC 
T81L0006A-DK 
Crystal 
T81L0006A-AD 
RC 
T81L0006A-BD 
Crystal 
T81L0006A-CD 
RC 
T81L0006A-DD 
Crystal 
T81L0006B-AK 
RC 
T81L0006B-BK 
Crystal 
T81L0006B-AD 
RC 
T81L0006B-BD 
Crystal 
Part number 
EEPROM 
Package 
NONE 
NONE 
NONE 
NONE 
NONE 
NONE 
NONE 
NONE 
Embedded 
Embedded 
Embedded 
Embedded 
24-pin DIP 
24-pin DIP 
20-pin DIP 
20-pin DIP 
24-pin SOP 
24-pin SOP 
20-pin SOP 
20-pin SOP 
24-pin DIP 
24-pin DIP 
24-pin SOP 
24-pin SOP