UPD784938 Datasheet, PDF (617/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

CHAPTER 24 LOCAL BUS INTERFACE FUNCTION
(b) Programmable wait control register 2 (PWC2)
15
14
13
12
11
10
9
8
PWC2 1
0
1
0
1
0
1
0
7
6
5
4
3
2
1
0 Address After reset R/W
PW71 PW70 PW61 PW60 PW51 PW50 PW41 PW40 0FFC8H AAAAH R/W
Address
PW41 PW40
Subject to Wait
Wait Cycle Insertion
010000H to
0
00
01FFFFH
0
11
1
02
1
1 _{Access wait cycle inserted only for}
WAIT pin low-level input period
Address
PW51 PW50
Subject to Wait
Wait Cycle Insertion
020000H to
03FFFFH
0
00
0
11
1
02
1
1 Access wait cycle inserted only for
WAIT pin low-level input period
Address
PW61 PW60
Subject to Wait
Wait Cycle Insertion
040000H to
0
00
07FFFFH
0
11
1
02
1
1 Access wait cycle inserted only for
WAIT pin low-level input period
Address
PW71 PW70
Subject to Wait
Wait Cycle Insertion
080000H to
0
0FFFFFH^Note
0
00
11
1
02
1
1 Access wait cycle inserted only for
WAIT pin low-level input period
Note Except part overlapping internal data area
Caution When the bus hold function is used, access wait control cannot be performed by means of the
WAIT pin, and 0, 1, or 2 waits must be selected for the entire space.
Preliminary User’s Manual U13987EJ1V0UM00
617