Справочник Пользователя для IBM EM78P312N
EM78P312N
8-Bit Microcontroller
20
•
Product Specification (V1.0) 10.03.2006
(This specification is subject to change without further notice)
Bit 2 ( PSR2 ) ~ Bit 0 ( PSR0 )
: TCC prescaler bits
PSR2
PSR1
PSR0
Operating Mode
0 0 0 1:2
0 0 1 1:4
0 1 0 1:8
0 1 1
0 0 1 1:4
0 1 0 1:8
0 1 1
1:16
1 0 0
1:32
1 0 1
1:64
1 1 0
1:128
1 1 1
1:256
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.
z
IOC6 and IOC9 registers are both readable and writable.
INTCR
− INT Control Register ( Address : 0Bh )
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
INT1NR INT0EN
0
INT3ES1 INT3ES0
0
INT1ES TC2ES
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
0 0
Rising
0 1
Falling
1 0
Both
edge
1 1
Reserved
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