Z51F3220FNX Datasheet, PDF (132/312 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F3220
Product Specification
T1CRL (Timer 1 Control Low Register) : BAH
7
6
5
4
3
2
1
0
T1CK2
T1CK1
T1CK0
T1IFR
–
T1POL
T1ECE
T1CNTR
R/W
R/W
R/W
R/W
–
R/W
R/W
R/W
Initial value : 00H
T1CK[2:0]
T1IFR
T1POL
T1ECE
T1CNTR
Select Timer 1 clock source. fx is main system clock frequency
T1CK2 T1CK1 T1CK0 Description
0
0
0
fx/2048
0
0
1
fx/512
0
1
0
fx/64
0
1
1
fx/8
1
0
0
fx/4
1
0
1
fx/2
1
1
0
fx/1
1
1
1
External clock (EC1)
When T1 Interrupt occurs, this bit becomes ‘1’. For clearing bit, write
‘0’ to this bit or auto clear by INT_ACK signal.
0
T1 Interrupt no generation
1
T1 Interrupt generation
T1O/PWM1O Polarity Selection
0
Start High (T1O/PWM1O is low level at disable)
1
Start Low (T1O/PWM1O is high level at disable)
Timer 1 External Clock Edge Selection
0
External clock falling edge
1
External clock rising edge
Timer 1 Counter Read Control
0
No effect
1
Load the counter value to the B data register (When write,
automatically cleared “0” after being loaded)
PS029902-0212
PRELIMINARY
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