upd75238 Renesas Electronics Corporation., upd75238 Datasheet - Page 120
upd75238
Manufacturer Part Number
upd75238
Description
4 Bit Single-chip Microcomputer
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD75238.pdf
(190 pages)
- Current page: 120 of 190
- Download datasheet (2Mb)
Static
mode
register B
8
Segment data
latch (8)
High-voltage
output buffer
Key scan reg-
ister (KS2)
Display data
memory
(32
S16/P100-
S23/P113
4/8
8
8
8
4 bits)
Fig. 4-68 Block Diagram of the FIP Controller/Driver
Segment data latch (16)
S0/P120-
S9/P141
Key scan registers
(KS0 and KS1)
10
10
Display data memory
(64
4/8
12
Internal bus
4 bits)
S10/T15/P142
and S11/T14/P143
Hige-voltage output buffer
2
2
2
2
S12/T13/P150/PH0-
S15/T10/P153/PH3
4
Selector
4
Selector
Port H
4
4
4
4
4
Display
mode
register
4
T0-T9
10
10
Digit
select
register
Digit signal
generator
4
Dimmer
select
register
4
V
LOAD
Key scan
flag (KSF)
Key scan flag
(KSF)
INTKS
IRQKS
set signal
Static
mode
register A
8
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