CHENGPIN
CP8056
EPROM/ROM-Based 8-Bit Microcontroller Series
P.1/
CP8056
Devices Included in this Data Sheet:
•
CP8056P : EPROM devices
•
CP8056P : Mask ROM devices
FEATURES
•
Only 42 single word instructions
•
All instructions are single cycle except for program branches which are two-cycle
•
13-bit wide instructions
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All ROM/EPROM area GOTO instruction
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All ROM/EPROM area subroutine CALL instruction
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8-bit wide data path
•
5-level deep hardware stack
•
Operating speed: DC-20 MHz clock input
DC-100 ns instruction cycle
Device
Pins #
I/O # EPROM/ROM (Byte) RAM (Byte)
CP8056
18
12
1K
49
•
Direct, indirect addressing modes for data accessing
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8-bit real time clock/counter (Timer0) with 8-bit programmable prescaler
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Internal Power-on Reset (POR)
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Built-in Low Voltage Detector (LVD) for Brown-out Reset (BOR)
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Power-up Reset Timer (PWRT) and Oscillator Start-up Timer(OST)
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On chip Watchdog Timer (WDT) with internal oscillator for reliable operation and soft-ware watch-dog
enable/disable control
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Two I/O ports IOA and IOB with independent direction control
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Soft-ware I/O pull-high/pull-down or open-drain control
•
One internal interrupt source: Timer0 overflow; Two external interrupt source: INT pin, Port B input change
•
Wake-up from SLEEP by INT pin or Port B input change
•
Power saving SLEEP mode
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Programmable Code Protection
•
Selectable oscillator options:
- RC: Resistor/Capacitor Oscillator
- XT: Crystal/Resonator Oscillator
- HF: High Frequency Crystal/Resonator Oscillator
- LF: Low Frequency Crystal Oscillator
•
Wide-operating voltage range:
- EPROM : 2.3V to 5.5V
- ROM : 2.3V to 5.5V
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