參數(shù)資料
型號： MC68HC912BL16CFU8
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP64
封裝： QFP-64
文件頁數(shù)： 97/128頁
文件大?。?/td> 3326K
代理商： MC68HC912BL16CFU8
MC68HC912BL16
70
MC68HC912BL16TS/D
CON01 — Concatenate PWM Channels 0 and 1
When concatenated, channel 0 becomes the high-order byte and channel 1 becomes the low-order
byte. Channel 0 output pin is used as the output for this 16-bit PWM (bit 0 of port P). Channel 1 clock-
select control bits determine the clock source.
0 = Channels 0 and 1 are separate 8-bit PWMs.
1 = Channels 0 and 1 are concatenated to create one 16-bit PWM channel.
NOTE
These bits should be changed only when both corresponding channels are dis-
abled. For Left Aligned output mode operation when changing these bits the user
should write to the associated PWM counters as the LAST operation before en-
abling (setting PWENx = 1) the channels(s).
PCKA2 – PCKA0 — Prescaler for Clock A
Clock A is one of two clock sources which may be used for channels 0 and 1. These three bits determine
the rate of clock A, as shown in Table 23.
PCKB2 – PCKB0 — Prescaler for Clock B
Clock B is one of two clock sources which may be used for channels 2 and 3. These three bits determine
the rate of clock B, as shown in Table 23.
Read and write anytime.
PCLK3 — PWM Channel 3 Clock Select
0 = Clock B is the clock source for channel 3.
1 = Clock S1 is the clock source for channel 3.
PCLK2 — PWM Channel 2 Clock Select
0 = Clock B is the clock source for channel 2.
1 = Clock S1 is the clock source for channel 2.
PCLK1 — PWM Channel 1 Clock Select
0 = Clock A is the clock source for channel 1.
1 = Clock S0 is the clock source for channel 1.
Table 23 Clock A and Clock B Prescaler
PCKA2
(PCKB2)
PCKA1
(PCKB1)
PCKA0
(PCKB0)
Value of
Clock A (B)
0
E
0
1
E
÷ 2
0
1
0
E
÷ 4
0
1
E
÷ 8
1
0
E
÷ 16
1
0
1
E
÷ 32
1
0
E
÷ 64
1
E
÷ 128
PWPOL — PWM Clock Select and Polarity
$0041
Bit 7
6
5
4
3
2
1
Bit 0
PCLK3
PCLK2
PCLK1
PCLK0
PPOL3
PPOL2
PPOL1
PPOL0
RESET:
0
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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