Block Diagram - Casio SF-8350 Service Manual & Parts List

9. BLOCK DIAGRAM

C0~C47
TO KEYBOARD
N O T E
NOTE: There are two types of the RAM chips:
1. Using 1pc. of HM62L864LFP-12MRL
µ
2. Using 2pcs. of PD43256AGU-10/12LL
LCD
192 X 48 dots
S0~S31 S32~S111
LCD DRIVER LCD DRIVER
MSM6585AV MSM6585AV
-Z-358B -Z-358B
DATA BUS
CPU
µ
PD3055GF002-2BA
ROM
(Character Generator)
HD62063B01
ROM
(Operation Program)
µ
PD23C4001EBGW-301
RAM
HM62L864LFP-12MRL
RAM
µ
PD43256AGX-
10/12/15LL
X 2 PCS.
— 14 —
CD401-TS
S112~S191
LCD DRIVER
MSM6585AV
-Z-358B
LCD DRIVE VOLTAGES
V1 ~ V4, VREG
POWER SUPPLY
SC371015FU
VDD
OPEN (OFF)
LOCK (ON)
MAIN SWITCH
GND
Power supply circuit
GATE ARRAY
µ
PD65005G-452-22
INTERFACE FOR
DATA TRANSMISSION
TX, RX
& DATA RECEPTION
CHIP FOR LCD
CARD LOCK SWITCH
FREE (OFF)
LOCK (ON)