Sony OA-D32W Service Manual page 79

Transistors/Diodes/I Cs Pin Arrangement
DTC114EK SN7438N (Til
TOP VI EW (SCALE 4/1) - TOP VI EW-
2SB734
2SA937·R
2SC2021·R
2SC1636-21
MBB847 (FUJITSU) (FLAT PACKAGE)
4-BIT ONE-CHIP MICROCOMPUTER
-TOP VIEW-
RO-R3: RO PORT
R4-R7 :RI PORT
R8-RII:R2 PORT
R12-
RI~:
R3 PORT
KO- K3 : K PORT
00- 03: OL PORT
04- 07: OH PORT
PO- P3 : P PORT
sp~p
n:
TIMER COUNTER
SC/TO:
SERIAL SHIFT CLOCKITIMING OUTPUT
S I : SERIAL BUFF
SO: SERIAL BUFFER OUTPUT
iRa :
INTERRUPT
EXTAL/XTAL: FOR X'TAL OR CLOCK INPUT
RESET: RESET INPUT
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