Z51F3220FNX Datasheet, PDF (169/312 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F3220
Product Specification
T4PCR1 (Timer 4 PWM Control Register 1) : 1003H (ESFR)
7
6
5
4
3
PWM4E
ESYNC
BMOD
PHLT
UPDT
R/W
R/W
R/W
R/W
R/W
2
UALL
R/W
1
NOPS1
R/W
0
NOPS0
R/W
Initial value : 00H
PWM4E
ESYNC
BMOD
PHLT
UPDT
UALL
NOPS[1:0]
Control Timer 4 Mode
0
Select timer/counter or capture mode of Timer 4
1
Select 10-bit PWM mode of Timer 4
Select the Operation of External Sync with the BLNK pin
0
Disable external sync operation
1
Enable external sync operation
(The all PWM4xA/PWM4xB pins are high-impedance outputs
on rising edge of the BLNK input pin. Where x= A, B and C)
Control Back-to-Back Mode Operation
0
Disable back-to-back mode (up count only)
1
Enable back-to-back mode (up/down count only)
Control Timer 4 PWM Operation
0
Run 10-bit PWM
1
Stop 10-bit PWM (counter hold and output disable)
Select the Update Timer of T4PPR/T4ADR/T4BDR/T4CDR
0
Update at period match of T4CNT and T4PPR
1
Update at any time when written
Control Update All Duty Registers (T4ADR/T4BDR/T4CDR)
0
Write a duty register separately
1
Wrtie all duty registers via Timer 4 PWM A dury register
(T4ADR)
Select on-Overlap Prescaler
NOPS1 NOPS0 Description
0
0
f_PWM/1
0
1
fPWM /2
1
0
fPWM /4
1
1
fPWM /8
NOTE) Where the fPWM is the clock frequency of the Timer 4 PWM.
PS029902-0212
PRELIMINARY
166