ST7628
11. TIMING CHARACTERISTICS
11.1Parallel Interface Characteristics bus (8080-series MCU)
Figure 11.1 Parallel Interface Characteristics bus(8080-series MCU)
(VSS=0V, VDDI=1.65V to 3.0V, VDDA=2.4V to 3.3V,Ta =25°C)
Parameter MIN MAX Unit Description
Signal
Symbol
TAST
TAHT
TCHW
TCS
TRCS
TRCSFM
TCSF
Address setup time
15
15
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
A0
-
Address hold time (Write/Read)
Chip select “H” pulse width
Chip select setup time (Write)
Chip select setup time (Read ID)
Chip select setup time (Read FM)
Chip select wait time (Write/Read)
Write cycle
Control pulse “H” duration
Control pulse “L” duration
Read cycle (ID)
Control pulse “H” duration (ID)
Control pulse “L” duration (ID)
Read cycle (FM)
Control pulse “H” duration (FM)
Control pulse “L” duration (FM)
Data setup time
40
/CS
100
355
15
250
150
60
250
60
150
550
355
90
TWC
WR
TWRH
TWRL
TRC
TRDH
TRDL
TRCFM
TRDHFM
TRDLFM
TDST
RD (ID)
When read ID data
When read from frame
memory
RD (FM)
D[15:0]
35
15
TDHT
Data hold time
Ver 1.4
192/213
2008/08
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