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CHAPTER 4 PORT FUNCTIONS
User’s Manual U19780EJ2V0UD
86
Figure 4-3. Block Diagram of P10 (1/2)
(1) 78K0/KB2-A
WR
PU
RD
WR
PORT
WR
PM
PU10
Output latch
(P10)
PM10
P10/TxD6/TI51/TO51
V
DD
P-ch
PU1
PM1
P1
Alternate function
(Timer)
Alternate function
(Serial interface)
Alternate
function
Internal bus
Selector
P1:
Port register 1
PU1:
Pull-up resistor option register 1
PM1:
Port mode register 1
RD: Read
signal
WR
××
: Write
signal