參數(shù)資料
型號(hào): M34518M4-XXXFP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP32
封裝: 7 X 7 MM, 0.80 MM PITCH, PLASTIC, LQFP-32
文件頁數(shù): 64/157頁
文件大?。?/td> 1783K
代理商: M34518M4-XXXFP
ML610Q411/ML610Q412/ML610Q415 User’s Manual
Chapter 11
PWM
11 – 5
11.2.4
PWM0 Counter Registers (PW0CH, PW0CL)
7
6
5
4
3
2
1
0
PW0CL
P0C7
P0C6
P0C5
P0C4
P0C3
P0C2
P0C1
P0C0
R/W
At reset
0
Address: 0F0A4H
Access: R/W
Access size: 8 bits
Initial value: 00H
7
6
5
4
3
2
1
0
PW0DH
P0C15
P0C14
P0C13
P0C12
P0C11
P0C10
P0C9
P0C8
R/W
At reset
0
Address: 0F0A5H
Access: R/W
Access size: 8 bits
Initial value: 00H
PW0CL and PW0CH are special function registers (SFRs) that function as 16-bit binary counters.
When data is written to either PW0CL or PW0CH, PW0CL and PW0CH is set to “0000H”. The data that is written is
meaningless.
When data is read from PW0CL, the value of PW0CH is latched. When reading PW0CH and PW0CL, use a word type
instruction or pre-read PW0CL.
The contents of PW0CH and PW0CL during PWM operation cannot be read depending on the combination of the
PWM clock and system clock. Table 11-1 shows PW0CH and PW0CL read enable/disable for each combination of the
PWM clock and system clock.
Table 11-1
PW0CH and PW0CL Read Enable/Disable during PWM0 Operation
PWM clock
P0CK
System clock
SYSCLK
PW0CH and PW0CL read enable/disable
LSCLK
Read enabled
LSCLK
HSCLK
Read enabled. However, to prevent the reading of undefined data
during counting, read consecutively PW0CH or PW0CL twice
until the last data coincides the previous data.
HTBCLK
LSCLK
Read disabled
HTBCLK
HSCLK
Read enabled
LSCLK
External clock
HSCLK
Read disabled
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