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tenx MCU
> 4-bit MCU
> TM87 series
>MCU
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| TM8720 |
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4-Bit Micro-Controller
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TM8720 Data Sheet (Ver 1.3) (*.pdf)
TM8720 User's Manual(English) Ver 1.2 (*.pdf)
tenx 4-bit Summary (.pdf)
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Description:
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Feature:
1. 1.5V operation only and with low power dissipation.
2. Powerful instruction set ( 86 instructions)
- Binary addition, subtraction, BCD adjust, logical operation in direct.
- Single-bit manipulation (set, reset, decision for branch).
- Various conditional branch.
- 16 working registers and manipulation.
- LCD driver data transfer.
3. Memory capacity
- ROM capacity 1024 x 16 bits.
- RAM capacity 64 x 4 bits.
4. Input/output ports
- Port IOA 4 pins (with internal pull-low), IOA port had built in the input signal chattering prevention circuitry.
- Port IOB2,3,4 3 pins (with internal pull-low), & mask option with BZB, BZ.
5. 4 level subroutine nesting.
6. Interrupt function
- External factor 1 (Pin IOA port).
- Internal factors 2 (Pre-Divider, Timer2).
7. Built in Alarm, clock or single tone melody generator (BZB, BZ), & mask option with IOB3, 4.
8. One 6-bit programmable timer (Timer 2) with programmable clock source.
9. LCD driver output
- 12 LCD driver outputs (up to drive 48 LCD segments).
- 1/4 Duty and1/2 Bias for LCD display.
- Single instruction to turn off all segments.
- 12 LCD Address.
10. Built-in Voltage double charge pump circuit.
11. Clock oscillation can be defined as X'tal, external-R or internal-R 2 type oscillator by mask option.
12. HALT function.
13. STOP function.
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Applications:
Thermometer
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