Z51F0410 Datasheet, PDF (90/184 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F0410
Product Specification
T1CR
T1PWHR
POL 16BIT PWM1E CAP1 T1CK1 T1CK0 T1CN T1ST
X
0
1
0
X
X
X
X
T1_PE -
-
- PW1H3 PW1H2 PW1H1 PW1H0
1
-
-
-
X
X
X
X
Period High
Duty High
ADDRESS
:
B4H
INITIAL VALUE : 0000_0000B
ADDRESS
:
B7H
INITIAL VALUE : 0---_0000B
P
r
e
÷1
fx
s
c
÷2
a ÷16
l
e
r
T0 Clock
Source
MUX
2
T1CK[1:0]
8-bit Timer3 PWM Period Register
T1PHR[1:0]
T1PPR
(8 Bit)
[B7H]
T1CN
T1ST
2 Bit
Comparator
T1
(8 Bit)
Clear
8-bit Timer3
Counter + 2-bit
[B6H]
Slave
T1PHR[7:6]
Comparator
T1PDR
(8 Bit)
[B6H]
T1_PE
SQ
R
POL
PWM1
Master
T1PDR
(8 Bit)
[B6H]
Figure 4.14 PWM Mode
Source Clock
(fX)
T1
T1/PWM1
POL = 1
T1/PWM1
POL = 0
00 01 02 03 04
7F 80 81 82
3FF 00 01 02
Duty Cycle(1+80H)X250ns = 32.25us
Period Cycle(1+3FFH)X250ns = 256us  3.9kHz
T1CR[1:0] = 00H(fXIN)
T1PWHR
=
03H
T1PPR = FFH
T1PDR = 80H
PW1H3
1
PW1H1
0
PW1H2
1
PW1H0
0
Figure 4.15 Example of PWM at 4MHz
T1PPR(8 Bit)
FFH
T1PDR(8 Bit)
80H
PS029502-0212
PRELIMINARY
87