MSM548333 Datasheet, PDF (29/42 Pages) OKI electronic componets – 240,384-Word x 8-bit + 240,384-Word x 4-bit Triple Port type Field Memory

¡ Semiconductor
MSM548333
Read Cycle (RE Control)
\
RCLK
\
\
RADE1/RX
\
\
RR1/TR
\
\
RXINC1
\
\
RE1/RY
\
DOY1/0 - 7 \
DOC1/0 - 3 \
\
RADE2/RX
\
\
RR2/TR
\
\
RXINC2
\
\
RCLKY2
\
\
REY2/RY
\
\
DOY2/0 - 7
\
\
RCLKC2
\
\
REC2/RY
\
\
DOC2/0 - 3
\
(L-2)CYCLE (L-1)CYCLE L CYCLE
t_RCLK (L+1) CYCLE (L+2) CYCLE
Low
Low
Low
t_REH1 t_REDS1 t_REDH1 t_RES1
t_OH1
Valid
D(L-3)
Valid
D(L-2)
Valid
D(L-1)
t_OHZ1
Valid
D(L)
t_AC1
High-Z
Valid
D(L+1)
Valid
D(L+2)
Low
Low
(M-2)CYCLE (M-1)CYCLE M CYCLE
t_RCLKY
Low
(M+1) CYCLE (M+2) CYCLE
t_REHY2 t_REDSY2 t_REDHY2t_RESY2
t_OHY2
t_OHZY2
t_ACY2
Valid
D(M-3)
Valid
D(M-2)
Valid
D(M-1)
Valid
D(M)
High-Z
Valid
D(M+1)
Valid
D(M+2)
(N-2)CYCLE (N-1)CYCLE N CYCLE
t_RCLKC (N+1) CYCLE (N+2) CYCLE
t_OHC2
Valid
D(N-3)
Valid
D(N-2)
t_REHC2 t_REDSC2 t_REDHC2t_RESC2
Valid
D(N-1)
t_OHZC2
t_ACC2
Valid
D(N)
High-Z
Valid
D(N+1)
Valid
D(N+2)
Note : In the cycle in which RE1/RY = "L", REY2/RY = "L", or REC2/RY = "L", the read address
pointer is not incremented and the output enters the high impedance state.
The signals RE1/RY, REY2/RY, and REC2/RY can be operated independently.
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