参数资料
型号: P87C554
厂商: NXP Semiconductors N.V.
英文描述: 80C51 8-bit microcontroller(80C51 8位微控制器)
中文描述: 80C51的8位微控制器(80C51的8位微控制器)
文件页数: 17/78页
文件大小: 393K
代理商: P87C554
Philips Semiconductors
Preliminary specification
80C554/83C554/87C554
80C51 8-bit microcontroller
16K/512 OTP/ROM/ROMless, 8 channel 10 bit A/D, I
2
C, PWM,
capture/compare, high I/O
1999 Apr 07
17
ECT0
BIT
SYMBOL
FUNCTION
IEN1.7
IEN1.6
IEN1.5
IEN1.4
IEN1.3
IEN1.2
IEN1.1
IEN1.0
ET2
ECM2
ECM1
ECM0
ECT3
ECT2
ECT1
ECT0
Enable Timer T2 overflow interrupt(s)
Enable T2 Comparator 2 interrupt
Enable T2 Comparator 1 interrupt
Enable T2 Comparator 0 interrupt
Enable T2 Capture register 3 interrupt
Enable T2 Capture register 2 interrupt
Enable T2 Capture register 1 interrupt
Enable T2 Capture register 0 interrupt
SU01083
ECT1
ECT2
ECT3
ECM0
ECM1
ECM2
ET2
0
1
2
3
4
5
6
7
(LSB)
(MSB)
IEN1 (E8H)
Reset Value = 00H
Figure 11. Timer T2 Interrupt Enable Register (IEN1)
T2MS0
BIT
TM2CON.7
TM2CON.6
TM2CON.5
SYMBOL
TSIS1
T2IS0
T2ER
FUNCTION
Timer T2 16-bit overflow interrupt select
Timer T2 byte overflow interrupt select
Timer T2 external reset enable. When this bit is set,
Timer T2 may be reset by a rising edge on RT2 (P1.5).
Timer T2 byte overflow interrupt flag
TM2CON.4
TM2CON.3
TM2CON.2
T2BO
T2P1
T2P0
TM2CON.1
TM2CON.0
T2MS1
T2MS0
SU01084
T2MS1
T2P0
T2P1
T2BO
T2ER
T2IS0
T2IS1
0
1
2
3
4
5
6
7
(LSB)
(MSB)
TM2CON (EAH)
Timer T2 prescaler select
T2P1
0
0
1
1
T2P0
0
1
0
1
Timer T2 Clock
Clock source
Clock source/2
Clock source/4
Clock source/8
Timer T2 mode select
0
0
1
1
0
1
0
1
Timer T2 halted (off)
T2 clock source = f
OSC
/12
Test mode; do not use
T2 clock source = pin T2
T2MS1
T2MS0
Mode Selected
Reset Value = 00H
Figure 12. T2 Control Register (TM2CON)
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