參數資料
型號: EM78P451S
廠商: ELAN Microelctronics Corp .
英文描述: Quad, Serial, 8-Bit DACs with Rail-to-Rail Outputs
中文描述: 8位微控制器的OTP ROM的
文件頁數: 15/54頁
文件大?。?/td> 421K
代理商: EM78P451S
EM78P451S
8-Bit Microcontroller with OTP ROM
Product Specification (V1.0) 06.01.2004
(This specification is subject to change without further notice)
11
4.2.2
CONT (Control Register)
7
6
5
4
3
2
1
0
/PHEN
/INT
-
-
PAB
PSR2
PSR1
PSR0
Bit 7 (/PHEN)
I/O pin pull-high enable flag.
0: For P60~P67, P74~P75 and P90~P95, the pull-high function is enabled.
1: The pull-high function is disabled.
Bit 6 (INT)
An interrupt enable flag cannot be written by the CONTW instruction.
0: interrupt masked by the DISI instruction.
1: interrupt enabled by the ENI or RETI instruction.
Bit5, 4
Not used, and to be read as “0”.
Bit 3 (PAB)
Prescaler assignment bit.
0: TCC
1: WDT
Bit 2 (PSR2) ~ Bit 0 (PSR0)
TCC/WDT prescaler bits.
PSR2
PSR1
PSR0
TCC Rate
WDT Rate
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
1:2
1:4
1:8
1:16
1:32
1:64
1:128
1:256
1:1
1:2
1:4
1:8
1:16
1:32
1:64
1:128
Bits 0~3, and 7
of the CONT register are readable and writable.
4.2.3
IOC5 ~ IOC9 (I/O Port Control Register)
"1" put the relative I/O pin into high impedance, while "0" put the relative I/O pin as
output.
Both P74 and P76 should not be defined as output pins at the same time. This also
applies to both P75 and P77.
Only the lower 6 bits of the IOC9 register are used.
4.2.4
IOCC (T1CON: Timer1 control register)
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0x0C
T1CON/IOCC
0
0
0
0
0
TM1E
TM1P1 TM1P0
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