upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 228

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

(2)
Note: WR0 and WR1 output a low level as shown in the above timing chart when target data access is
Remarks: 1. The circles indicate the sampling timing when 0 is set for the programmable wait.
228
WR1-WR0
AD15-AD0
Write cycle
CLKOUT
performed. At all other times, these pins output a high level.
ASTB
WAIT
CSn
2. The broken line indicates high impedance.
Figure 5-11: Bus Write Timing (Bus Size: 16 bit, 16-bit Access)
T1
A1
In the case of
AD15 to AD8
T2
8-bit access
AD7 to AD0
WR1, WR0
D1
00
Chapter 5 Bus Control Function
T3
User’s Manual U16702EE3V2UD00
T1
A2
Odd address
Undefined
Data
01
T2
Programmable
TW
wait
D2
00
Even address
Undefined
External
TW
wait
Data
10
T3
IDLE
state
TI
A3
T1