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ELECTRICAL DATA S3C2440A RISC MICROPROCESSOR
27-38
Table 27-10 External Bus Request Timing Constants
(V
DD
= 1.2 V ± 0.1 V, T
A
= -40 to 85 °C, V
EXT
= 3.3V ± 0.3V)
Parameter Symbol Min Typ. Max Unit
External Bus Request Setup Time
t
XnBRQS
2 – 4 ns
External Bus Request Hold Time
t
XnBRQH
0 – 1 ns
External Bus Ack Delay
t
XnBACKD
4 – 10 ns
HZ Delay
t
HZD
2 – 6 ns
Table 27-11 DMA Controller Module Signal Timing Constants
(V
DD
= 1.2 V ± 0.1 V, T
A
= -40 to 85 °C, V
EXT
= 3.3V ± 0.3V)
Parameter Symbol Min Typ. Max Unit
External Request Setup
t
XRS
3 – 5 ns
Access To Ack Delay During Low Transition
t
CADL
3 – 8 ns
Access To Ack Delay During High Transition
t
CADH
3 – 8 ns
External Request Delay
t
XAD
2 – – SCLK