參數(shù)資料
型號: MC68HC05BS8FB
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.2 MHz, MICROCONTROLLER, PQFP44
封裝: PLASTIC, QFP-44
文件頁數(shù): 86/128頁
文件大?。?/td> 9691K
代理商: MC68HC05BS8FB
7-4
MC68HC05BS8
PULSE WIDTH MODULATION
7
When used for raster position control, the RCLK is a clock signal which is in synchronized and with
a frequency of multiples to the horizontal sync signal. The counter reset signal to PB7 pin is the
horizontal y back signal. Both of these signals will normally come from an OSD circuit.
7.2.1
Raster Positioning Pulse Width Modulator Register
(RSPWM)
RSP - Raster Polarity
1 (set)
RSA output is zero. RSPWM waveform is output on RSB.
0 (clear) –
RSB output is zero. RSPWM waveform is output on RSA.
RSPW6:0 - RSPWM Data
These 7 bits contain the pulse width modulator data for the RSPWM. The RSPWM output remains
low after the counter reset, and turns high when the counter value matches this value.
CRE - Clear Reset Enable
1 (set)
PB7 pin congured as reset input to the RSPWM. The DDR for PB7
should also be “0”.
0 (clear) –
PB7 pin normal I/O operation.
Address
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
RSPWMR
$0011
RSP RSPW6 RSPW5 RSPW4 RSPW3 RSPW2 RSPW1 RSPW0 0000 0000
Address
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
GPWMR
$0010
ODE
CRE
GPW5 GPW4 GPW3 GPW2 GPW1 GPW0 0000 0000
TPG
58
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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