Casio SF-4300A Service Manual & Parts List page 13

µ
6-2. RAM: PD43256G-101215LL (LSI 2)
6-4. LCD driver: NM 360
µPD3056G-007 (WE)
µPD3056G-007 (CS3)
A0 ~ A14 : Address input signal
IO0 ~ IO7 : Data signal (Input/Output)
WE
CS
OE
— —
11
: Write enable signal
: Chip select signal
: Output enable signal