UPD753012GC NEC, UPD753012GC Datasheet - Page 24

• Manufacturer Part Number: UPD753012GC
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER
• Manufacturer: NEC

6.4 Clock Output Circuit
control waveform outputs and peripheral LSI’s, etc.
24
The clock output circuit is provided to output the clock pulses from the P22, PTO2, and PCL pins to the remote
• Clock output (PCL) :
From clock
generator
Remark Special care has been taken in designing the chip so that small-width pulses may not be output
f
f
f
CLOM3
X
X
X
/2
/2
/2
3
4
6
when switching clock output enable/disable.
0
4
CLOM1 CLOM0
Selector
, 524, 262, 65.5 kHz (at 4.19 MHz operation)
, 750, 375, 93.8 kHz (at 6.0 MHz operation)
Figure 6-3. Clock Output Circuit Block Diagram
CLOM
From timer/event
counter (channel 2)
Internal bus
P22
output latch
PORT2.2
Output buffer
PD753012, 753016, 753017
Port 2 I/O mode
specification bit
Bit 2 of PMGB
PCL/PTO2/P22