MB91F155A Datasheet, PDF (5/105 Pages) Fujitsu Component Limited. – 32-bit Proprietary Microcontrollers

MB91F155A/MB91155/MB91154
s PIN DESCRIPTION
Pin No.
1
2
3
4
5
6
7
8
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
Pin name
D16/P20
D17/P21
D18/P22
D19/P23
D20/P24
D21/P25
D22/P26
D23/P27
D24/P30
D25/P31
D26/P32
D27/P33
D28P34
D29/P35
D30/P36
D31/P37
A00/P40
A01/P41
A02/P42
A03/P43
A04/P44
A05/P45
A06/P46
A07/P47
A08/P50
A09/P51
A10/P52
A11/P53
A12/P54
A13/P55
A14/P56
A15/P57
A16/P60
A17/P61
A18/P62
A19/P63
A20/P64
A21/P65
A22/P66
A23/P67
45
RDY/P80
Circuit
type
Function
Bit 16 to bit 23 of external data bus
C
These pins are enabled only in 16-bit external bus mode.
These pins are available as ports in single-chip and 8-bit external bus
modes.
C
Bit 24 to bit 31 of external data bus
These pins are available as ports in single-chip mode.
Bit 0 to bit 15 of external address bus
F These pins are enabled in external bus mode.
These pins are available as ports in single-chip mode.
O
Bit 16 to bit 23 of external address bus
These pins are available as ports when the address bus is not in use.
External RDY input
C
This function is enabled when external RDY input is allowed.
Input “0” when the bus cycle being executed does not end.
This pin is available as a port when external RDY input is not in use.
(Continued)
5