参数资料
型号: M37272MFH-XXXSP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP42
封装: 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-42
文件页数: 100/131页
文件大小: 1297K
代理商: M37272MFH-XXXSP
70
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37272M6H/M8H/MAH/MFH–XXXSP/FP
M37272E8SP/FP, M37272EFSP/FP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
b7 of raster color
register
OSD control
register
I/O
Port
1
0
8.11.3 Clock for OSD
As a clock for display to be used for OSD, it is possible to select one
of the following 3 types.
Data slicer clock output from the data slicer (approximately 26 MHz)
OSC1 clock supplied from the pins OSC1 and OSC2
Clock from the ceramic resonator or the LC oscillator from the pins
OSC1 and OSC2
This OSD clock for each block can be selected by the following bits
: bit 7 of the raster color register (address 00D916), bits 3 to 6 of the
clock source control register (addresses 00D016). A variety of char-
acter sizes can be obtained by combining dot sizes with OSD clocks.
When not using the pins OSC1 and OSC2 for the OSD clock I/O
pins, the pins can be used as sub-clock I/O pins or port P2.
Fig. 8.11.12 Block Diagram of OSD Selection Circuit
Table 8.11.2 Setting for P26/OSC1/XCIN, P27/OSC2/XCOUT
OSD clock
I/O Pin
0
1
0
Sub-clock
I/O Pin
0
Function
Register
b6
b5
“0”
“10”
“0”
Data slicer
circuit
Data slicer clock
(See note)
OSC1 clock
Ceramic LC
Oscillating mode for OSD
OC6, OC5
“1”
OC3
OC4
CC mode block
OSD mode block
Note : To use data slicer clock, set bit 0 of data slicer control register 1 to “1.”
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