參數(shù)資料
型號: UPD75068GB
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述: 4位單片機(jī)
文件頁數(shù): 20/68頁
文件大小: 640K
代理商: UPD75068GB
20
μ
PD75064, 75066, 75068, 75064(A), 75066(A), 75068(A)
5.3 Clock Output Circuit
The clock output circuit outputs clock pulses from the P22/PCL pin, and is used to supply clock pulses to
remote unit controller and peripheral LSIs.
Clock output (PCL):
Φ
, 524 kHz, 262 kHz, 65.5 kHz (f
X
= at 4.19 MHz)
Figure 5-2. Clock Output Circuit Configuration
Remark
Measures are taken to prevent outputting a narrow pulse when selecting clock output
enable/disable.
From the clock
generator
Φ
CLOM3 0 CLOM1 CLOM0 CLOM
Selector
Output
buffer
Port 2 input/
output mode
specification bit
P22 output
latch
P22/PCL
Internal bus
4
f
X
/ 2
3
f
X
/ 2
4
f
X
/ 2
6
PORT2.2
Bit 2 of PMGB
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