80C554 Datasheet, PDF (17/76 Pages) NXP Semiconductors – 80C51 8-bit microcontroller . 6 clock operation 16K/512 OTP/ROM/ROMless, 7 channel 10 bit A/D, I2C, PWM, capture/compare, high I/O, 64L LQFP

Philips Semiconductors
80C51 8-bit microcontroller – 6 clock operation
16K/512 OTP/ROM/ROMless, 7 channel 10 bit A/D, I²C, PWM,
capture/compare, high I/O, 64L LQFP
Preliminary specification
80C554/83C554/87C554
IEN1 (E8H)
7
ET2
(MSB)
6
ECM2
5
ECM1
4
ECM0
3
ECT3
2
ECT2
1
ECT1
0
ECT0
(LSB)
BIT
IEN1.7
IEN1.6
IEN1.5
IEN1.4
IEN1.3
IEN1.2
IEN1.1
IEN1.0
SYMBOL
ET2
ECM2
ECM1
ECM0
ECT3
ECT2
ECT1
ECT0
FUNCTION
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
Figure 11. Timer T2 Interrupt Enable Register (IEN1)
Reset Value = 00H
SU01083
TM2CON (EAH)
7
T2IS1
(MSB)
6
T2IS0
5
T2ER
4
T2BO
3
T2P1
2
T2P0
1
0
T2MS1 T2MS0
(LSB)
Reset Value = 00H
BIT
TM2CON.7
TM2CON.6
TM2CON.5
SYMBOL
TSIS1
T2IS0
T2ER
TM2CON.4
TM2CON.3
TM2CON.2
T2BO
T2P1
T2P0
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
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
TM2CON.1
TM2CON.0
T2MS1
T2MS0
Timer T2 mode select
T2MS1 T2MS0
0
0
0
1
1
0
1
1
Mode Selected
Timer T2 halted (off)
T2 clock source = f_OSC/6
Test mode; do not use
T2 clock source = pin T2
Figure 12. T2 Control Register (TM2CON)
SU01446
2000 Nov 10
17