K4S641632F-Tc75 (Ic504) :Cmos Sdram - JVC XV-S300BK Service Manual

XV-S300BK/XV-S332SL/XV-S402SL/XV-S403SG

4.9 K4S641632F-TC75 (IC504) :CMOS SDRAM

4.9.1 Pin layout
4.9.2 Block diagram
CLK
ADD
LCKE
LRAS
CLK
4.9.3 Pin functions
Symbol
CLK System clock
CS Chip select
CKE Clock enable
A0~A11 address
BS0,1 Bank address strobe
RAS Row address strobe
CAS column address strobe
WE Write enable
LDQM Data input/output mask
DQ0~15 Data input/output
Vcc/Vss Power supply/ground
Vccq/Vssq Data output power/ground
N.C Non connect
32
Bank select
LCBR LWE LCAS
Timing register
CKE CS RAS CAS
Description
Data input register
1M x 16
1M x 16
1M x 16
1M x 16
Column decoder
Latency & Burst length
Programming register
LWCBR
WE L(U)DQM
LWE
LDQM
DQI
LDQM