T81L0010A-AK

tm ! ! ! ! ! ! ! ! ! ! ! ! ! TE CH T81L0010A 8-bit MCU 1. Features Compatible with MCS-51 Embedded 8K Bytes OTP ROM 256 x 8-bit Internal RAM 15 Programmable I/O Lines for 20-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 SOP20/DIP20 Package 3.3V Operating Voltage 2. General Description The T81L0010A 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, 15 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 T81L0010A 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. 3. Order Information Part number T81L0010A-AK T81L0010A-BK T81L0010A-AD T81L0010A-BD Oscillator type RC Crystal RC Crystal Package 20-pin DIP 20-pin DIP 20-pin SOP 20-pin SOP TM Technology Inc. reserves the right to change products or specifications without notice. P. 1 Publication Date: JAN. 2006 Revision:B tm TE CH T81L0010A 4. Block Diagram RAM Addr. Register RAM OTP ROM B Register ACC Stack Pointer TMP2 W DT TMP1 Program Address Register Buffer ALU PC Incrementer Interrupt, Serial port, and Timer Block PSW Program Counter DPTR RST Timing & Control Instruction Register Port 3 Latch Port 1 Latch OSC Port 3 Drivers P ort 1 Drivers XTAL1 XTAL2 P3.0 -P3.5, P3.7 P1.0 -P1.7 TM Technology Inc. reserves the right to change products or specifications without notice. P. 2 Publication Date: JAN. 2006 Revision:B tm TE CH T81L0010A 5. Pin Configuration RST/VPP (RXD) P3.0 (TXD) P3.1 XOUT XIN (INT0) P3.2 (INT1) P3.3 (T0) P3.4 (T1) P3.5 GND 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCC P1.7 P1.6 P1.5 P1.4 P1.3 P1.2 P1.1 P1.0 P3.7 DIP-20/SOP-20 For Crystal Oscillator T81L0010A-BK/ T81L0010A-BD RST/VPP (RXD) P3.0 (TXD) P3.1 OSCR STOP (INT0) P3.2 (INT1) P3.3 (T0) P3.4 (T1) P3.5 GND 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCC P1.7 P1.6 P1.5 P1.4 P1.3 P1.2 P1.1 P1.0 P3.7 DIP-20/SOP-20 For RC Oscillator T81L0010A-AK/ T81L0010A-AD TM Technology Inc. reserves the right to change products or specifications without notice. P. 3 Publication Date: JAN. 2006 Revision:B tm Number (20-Pin) 1 2 3 4(BK,BD) 4(AK,AD) 5(BK,BD) 5(AK,AD) 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 TE CH T81L0010A 6. Pin Description Name RST/VPP P3.0/(RXD) P3.1/(TXD) XOUT OSCR XIN STOP P3.2/(INT0) P3.3/(INT1) P3.4/(T0) P3.5/(T1) GND P3.7 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 VCC Type I I/O I/O O I I O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O Description Reset signal input or programming supply voltage input. General-purpose I/O pin (Default) or Serial input port. General-purpose I/O pin (Default) or Serial output port. Crystal oscillator output terminal. RC oscillator external resister connect pin. Crystal oscillator input terminal. Stop RC oscillator network. General-purpose I/O pin (Default) or External interrupt source 0. General-purpose I/O pin (Default) or External interrupt source 1. General-purpose I/O pin (Default) or Timer 0 external input pin. General-purpose I/O pin (Default) or Timer 1 external input pin. Ground General-purpose I/O pin General-purpose I/O pin General-purpose I/O pin General-purpose I/O pin General-purpose I/O pin General-purpose I/O pin General-purpose I/O pin General-purpose I/O pin General-purpose I/O pin 3.3V power supply. TM Technology Inc. reserves the right to change products or specifications without notice. P. 4 Publication Date: JAN. 2006 Revision:B tm TE CH T81L0010A 7. Temperature Limit Ratings Parameter Operating temperature Range Storage Temperature Range Rating -40 to +85 -55 to +125 Units °C °C 8. Electrical Characteristics D.C Characteristics Symbol VCC ICC IPD VIH VIL VOH Conditions 25°C No load, Vcc=2.5V, 4MHz Operating Current No load, Vcc=3.3V, 12MHz Power Down Current Vcc=3.3V Vout >=VVOH(MIN.) Hi-Level input voltage Vout =VVOH(MIN.) Low-Level input voltage Vout