參數(shù)資料
型號： MC68C912B32FU8
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： 16-Bit Microcontroller
中文描述： 16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP80
封裝： QFP-80
文件頁數(shù)： 65/128頁
文件大?。?/td> 748K
代理商： MC68C912B32FU8
MC68HC912B32
MC68HC912B32TS/D
MOTOROLA
65
Figure 17 PWM Clock Sources
11.1 PWM Register Description
Read and write anytime.
CON23 — Concatenate PWM Channels 2 and 3
When concatenated, channel 2 becomes the high-order byte and channel 3 becomes the low-order
byte. Channel 2 output pin is used as the output for this 16-bit PWM (bit 2 of port P). Channel 3 clock-
select control bits determines the clock source.
0 = Channels 2 and 3 are separate 8-bit PWMs.
1 = Channels 2 and 3 are concatenated to create one 16-bit PWM channel.
PWCLK —
PWM Clocks and Concatenate
$0040
Bit 7
6
5
4
3
2
1
Bit 0
CON23
CON01
PCKA2
PCKA1
PCKA0
PCKB2
PCKB1
PCKB0
RESET:
0
0
0
0
0
0
0
0
8-BIT DOWN COUNTER
PCLK2
M
PCLK3
M
CLOCK TO PWM
CHANNEL 2
CLOCK TO PWM
CHANNEL 3
÷
2
PWSCNT1
8-BIT SCALE REGISTER
PWSCAL1
CLOCK B
C
**CLOCK S1 = (CLOCK B)/2, (CLOCK B)/4, (CLOCK B)/6,... (CLOCK B)/512
÷
2
0:0:0
0:0:1
0:1:0
0:1:1
1:0:0
1:0:1
1:1:0
1:1:1
÷
2
÷
2
÷
2
÷
2
÷
2
÷
2
0:0:0
0:0:1
0:1:0
0:1:1
1:0:0
1:0:1
1:1:0
1:1:1
8-BIT DOWN COUNTER
PCLK0
M
PCLK1
M
CLOCK TO PWM
CHANNEL 0
CLOCK TO PWM
CHANNEL 1
÷
2
PWSCNT0
8-BIT SCALE REGISTER
PWSCAL0
CLOCK A
C
*CLOCK S0 = (CLOCK A)/2, (CLOCK A)/4, (CLOCK A)/6,... (CLOCK A)/512
REGISTER:
PWPRES
BITS:
PCKB2,
PCKB1,
PCKB0
= 0
= 0
BITS:
PCKA2,
PCKA1,
PCKA0
PSBCK
LIMBDM
PCLK
PSBCK IS BIT 0 OF PWCTL REGISTER.
INTERNAL SIGNAL
LIMBDM
IS ONE IF THE MCU IS IN BACKGROUND DEBUG MODE.
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