EM78P312N
8-Bit Microcontroller
Bit 2 ( PSR2 ) ~ Bit 0 ( PSR0 ) : TCC prescaler bits
PSR2 |
| PSR1 |
| PSR0 |
| Operating Mode |
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0 |
| 0 |
| 0 |
| 1:2 |
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0 |
| 0 |
| 1 |
| 1:4 |
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0 |
| 1 |
| 0 |
| 1:8 |
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0 |
| 1 |
| 1 |
| 1:16 |
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1 |
| 0 |
| 0 |
| 1:32 |
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1 |
| 0 |
| 1 |
| 1:64 |
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1 |
| 1 |
| 0 |
| 1:128 |
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1 |
| 1 |
| 1 |
| 1:256 |
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IOC6 ~ IOC9 − I/O Port Control Register
z"1" puts the relative I/O pin into high impedance, while "0" defines the relative I/O pin as output.
zIOC6 and IOC9 registers are both readable and writable.
INTCR − INT Control Register ( Address : 0Bh )
Bit 7 | Bit 6 |
| Bit 5 | Bit 4 | Bit 3 |
INT1NR | INT0EN |
| 0 | INT3ES1 | INT3ES0 |
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| Bit 2 | Bit 1 | Bit 0 |
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| 0 | INT1ES | TC2ES |
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Bit 7 ( INT1NR ) : INT1 noise reject time select
INT1NR = “0” : Pulses less than 63/fc are eliminated as noise
INT1NR = “1” : Pulses less than 15/fc are eliminated as noise
Bit 6 ( INT0EN ) : INT0 enable control
INT0EN = “0” : General I/O
INT0EN = “1” : /INT0 pin
Bit 5 : Reserved
Bit 4 ~ Bit 3 ( INT3ES1 ~ INT3ES0) : INT3 edge select
INT3ES1 |
| INT3ES0 |
| Edge Select |
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0 |
| 0 |
| Rising | |
0 |
| 1 |
| Falling | |
1 |
| 0 |
| Both edge | |
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1 |
| 1 |
| Reserved | |
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Bit 2: Reserved
Bit 1 ( INT1ES ) : INT1 edge select
INT1ES = “0” : Rising edge
INT1ES = “1” : Falling edge
Bit 0 (TC2ES) : Timer/Counter 2 edge select.
TC2ES = “0” : Rising edge
TC2ES = “1” : Falling edge
20 • | Product Specification (V1.0) 10.03.2006 |
(This specification is subject to change without further notice)
