upd78f0148m1gka1-9eu Renesas Electronics Corporation., upd78f0148m1gka1-9eu Datasheet - Page 128
upd78f0148m1gka1-9eu
Manufacturer Part Number
upd78f0148m1gka1-9eu
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0148M1GKA1-9EU.pdf
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Remark
Internal wait signal
AD0 to AD7
(1-clock wait)
A8 to A15
AD0 to AD7
A8 to A15
AD0 to AD7
ASTB
WAIT
The read-modify-write timing is that of an operation when a bit manipulation instruction is executed.
A8 to A15
WR
RD
ASTB
ASTB
WR
RD
WR
RD
Figure 5-8. External Memory Read Modify Write Timing
Lower
address
Lower
address
(c) External wait (PW1, PW0 = 1, 1) setting
Lower
address
CHAPTER 5 EXTERNAL BUS INTERFACE
(a) No wait (PW1, PW0 = 0, 0) setting
(b) Wait (PW1, PW0 = 0, 1) setting
User’s Manual U15947EJ3V1UD
Read data
Read data
Read data
Higher address
Higher address
Higher address
Hi-Z
Hi-Z
Hi-Z
Write data
Write data
Write data
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