Sharp UX-370SE Service Manual page 96

UX-370ES/SE/F
FO-780AT/ES
IC1: RH-iX2129SCZZ (M514800C-70J)
VCC 1
I/O0 2
I/O1 3
I/O2 4
I/O3 5
NC 6
WE
7
RAS
8
A9 9
A0 10
A1 11
A2 12
A3 13
VCC 14
CONTROL CIRCUIT
IO3
I/O3 BUFFER
28 VSS
27 I/O7
A0~A9
26 I/O6
I/O0~I/O7
25 I/O5
RAS
24 I/O4
23 CAS
22 OE
21 NC
20 A8
19 A7
18 A6
17 A5
16 A4
15 VSS
RAS CAS
RAS CAS
CONTROL CIRCUIT
IO2 IO1
I/O2 BUFFER I/O1 BUFFER
ROW DETECTOR & PERIPHERAL CIRCUIT
ROW ADDRESS BUFFER
A0~A9
PIN DESCRIPTION
PIN
PIN NAME
ADDRESS INPUT
(LOW/REFRESH A0~A3
COLUMN A0~A3)
DATA I/O
LOW ADDRESS STROBE
BLOCK DIAGRAM
WE
WE
CONTROL CIRCUIT
IO0 IO7
I/O0 BUFFER I/O7 BUFFER
A0~A8
ADDRESS A0~A9
8 – 8
PIN
PIN NAME
CAS COLUMN ADDRESS STROBE
WE READ/WRITE INPUT
OE OUTPUT ENABLE
VCC POWER (+5V)
VSS CONNECTION
OE
OE
CONTROL CIRCUIT
IO6 IO5
I/O6 BUFFER I/O5 BUFFER I/O4 BUFFER
COLUMN ADDRESS BUFFER
IO4