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TM57MT20概述
1. 36 instructions, two clock cycles execution
2. 2Kx14 MTP (Multi-Time Programmable) ROM
3. 184-Byte SRAM
4. 6-level Stack
5. Independent RC Oscillating Watchdog Timer (or Wake-up Timer) with 4 adjustable Reset/Interrupt Times (960 ms/240 ms/120 ms/30 ms)
6. Independent Timers
Timer0 is 8-bit with 8-bit prescaler, Counter/Reload/Read/Write/Capture/Interrupt function
7. Max. 16 Programmable I/O pins
. CMOS Output
. Open-Drain Output
. Schmitt Trigger Input
8. Dual-clock selections
. FIRC (Fast Internal RC): 3M Hz
. SIRC (Slow Internal RC) 32K/16K/8K/4KHz
9. Power Saving Operation Modes
. Fast Mode: Slow Clock can be disabled or enabled
. Slow Mode: Fast Clock stop, CPU running
. Idle Mode: Slow Clock running, CPU off, Low power auto touch key running
. Stop Mode: All Clock stop, wake-up Timer can be disabled or enabled
10. 7 Maskable Interrupt Sources
. 4 External Interrupt pins: 3-pin negative edge triggers, 1-pin positive or negative edge trigger
. Timer0, Wake-up Timer Interrupt
. I2C Interrupt
. Auto Touch Key scan interrupt
11. Independent 8-bit PWM
. PWM0 with prescaler/period-adjustment/buffer-reload/pos-neg-output
12. 14-channel Touch Key
1 ~ 4 Key H/W auto scan, threshold adjustable for each key
Interrupt / Wake-up CPU while key is pressed
13. Specific purpose slave I2C interface
14. Operation voltage: 1.2V to 3.6V
