CHAPTER 5 MEMORY ACCESS CONTROL FUNCTION
137
User’s Manual U14492EJ3V0UD
Figure 5-1. SRAM, External ROM, External I/O Access Timing (5/5)
(e) Bus hold timing
T2
Note 1
Address
Undefined
Note 2
Address
Undefined
T3
TH
TH
TH
TH
TI
T1
CLKOUT (Output)
A16 to A23 (Output)
AD0 to AD15 (I/O)
HLDAK (Output)
ASTB (Output)
RD (Output)
UWR, LWR (Output)
CSn (Output)
HLDRQ (Input)
WAIT (Input)
Undefined
Notes 1.
On a read: Undefined
On a write: Address
2.
On a read: Data
On a write: Undefined
Remarks 1.
The circles indicate the sampling timing.
2.
Broken lines indicate high impedance.
3.
n = 0 to 7
Содержание V850E/IA1 mPD703116
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