M38C21F1DHP Ver la hoja de datos (PDF) - MITSUBISHI ELECTRIC
Número de pieza
componentes Descripción
Fabricante
M38C21F1DHP Datasheet PDF : 63 Pages
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(1) Ports P00–P03
Segment output disable bit
Segment data
Segment output disable bit
VL2/VL3
VL1/VSS
Data bus
Direction register
Port latch
Key-on wakeup
interrupt input
Key input control
(3) Port P30
Serial I/O mode selection bit
Serial I/O enable bit
SRDY output enable bit
Direction register
Data bus
Port latch
Pull-up control
Serial I/O ready output
MITSUBISHI MICROCOMPUTERS
38C2 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
(2) Ports P04–P07, P1, P2
Segment output disable bit
VL2/VL3
Segment data
Segment output disable bit
VL1/VSS
Direction register
Data bus
Port latch
LCD power input (VL1,VL2)
only for P26,P27
(4) Port P31
Serial I/O synchronous
clock selection bit
Serial I/O enable bit
Serial I/O mode selection bit
Serial I/O enable bit
Direction register
Data bus
Port latch
Pull-up control
Serial I/O clock output
Serial I/O clock input
(5) Port P32
P32/TxD2 P-channel
output disable bit
Serial I/O enable bit
Transmit enable bit
Direction register
Pull-up control
Data bus
Port latch
(6) Port P33
Serial I/O enable bit
Receive enable bit
Direction register
Data bus
Port latch
Pull-up control
Serial I/O output
Fig. 12 Port block diagram (1)
Serial I/O input
15
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