CHAPTER 4 BUS CONTROL FUNCTION
User’s Manual U12688EJ4V0UM00
121
4.8.4 Bus hold timing
TO1
TO2
Column address
Undefined
Note
Note
WAIT
D0 to D15
IOWR
IORD
LWR/LCAS
UWR/UCAS
WE
OE
RD
CSn/RASn
BCYST
HLDRQ
HLDAK
A0 to A23
CLKOUT
Data
TH
TH
TH
TI
TI
Note If HLDRQ signal is inactive (high level) at this sampling timing, bus hold state is not entered.
Remarks 1. The circle indicates the sampling timing.
2. The broken lines indicate high impedance.
3. n = 0 to 7
4. Timing from DRAM access to bus hold state.
Содержание V850E/MS1 UPD703100
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