UPD75238GJ NEC [NEC], UPD75238GJ Datasheet - Page 149

• Manufacturer Part Number: UPD75238GJ
• Description: 4 BIT SINGLE-CHIP MICROCOMPUTER
• Manufacturer: NEC [NEC]

A/D converter
Bit sequential buffers (BSB0 to BSB3)
FIP controller/
driver
Clock genera-
tor, clock out-
put circuit
Interrupt
Digital ports
Ports 10 to 15
Port H
Mode register (ADM), EOC
SA register
Mode register (DSPM)
Dimmer select register (DIMS)
Digit select register (DIGS)
Display data memory
Output buffer
Static mode registers
(STATA, STATB)
Processor clock control register
(PCC)
System clock control register (SCC)
Clock output mode register (CLOM)
Interrupt request flag (IRQ
Interrupt enable flag (IE
Interrupt master enable flag (IME)
INT0 and INT1 mode registers
(IM0, IM1)
Output buffer (Ports 2 to 7)
Output latch (Ports 2 to 7)
I/O mode registers (PMGA, PMGB)
Pull-up resistor specification regis-
ter (POGA)
Output buffer
Output latch
Output latch
Hardware
Table 7-1 Statuses of the Hardware after a Reset (2/2)
)
)
RESET input in a standby mode
04H (EOC = 1)
Undefined
Held
0
0
8H
Held
Off
0, 0
0
0
0
Reset
0
0
0, 0
Off
Clear
0
0
Off
0
Held
04H (EOC = 1)
Undefined
Undefined
0
0
8H
Held
Off
0, 0
0
0
0
Reset
0
0
0, 0
Off
Clear
0
0
Off
0
Undefined
RESET input during operation
PD75238
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