Electronics America 4-Bit Single-Chip Microcomputer User's Manual
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CHAPTER 5. PERIPHERAL HARDWARE FUNCTIONS
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 peripheral
LSIs, etc.
5.3.1 Clock Output Circuit Configuration
The configuration of the clock output circuit is shown in Fig. 5-18.
Fig. 5-18 Clock Output Circuit Configuration
Remarks When switching between clock output enabled/disabled states, consideration has been given to ensuring
that a short pulse is not output.
From Clock
Generation
Circuit
Φ
f
XX
/2
6
Selector
CLOM0CLOM1CLOM3 CLOM
4
0
Internal Bus
P22/PCL
PMGB Bit 2
Port 2 Input/
Output Mode
Specification Bit
P22
Output
Latch
PORT2.2
Output
Buffer