UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 637

• Manufacturer Part Number: UPD784026
• Description: 16/8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

* f
(a) Read timing
(b) Write timing
CLK
: Internal system clock frequency. This signal is only present inside the PD784026.
ASTB (Output)
ASTB (Output)
WAIT (Input)
WAIT (Input)
WR (Output)
RD (Output)
AD0 - AD7
AD0 - AD7
A8 - A15
A8 - A15
(Output)
(Output)
(Output)
f
f
CLK
CLK
*
*
Low-Order
Low-Order
Address
Address
CHAPTER 21 LOCAL BUS INTERFACE FUNCTION
Figure 21-14 Timing with External Wait Signal
Hi-Z
Hi-Z
High-Order Address
High-Order Address
Data
Data (Input)
Hi-Z
Hi-Z
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