mb91101 Fujitsu Microelectronics, Inc., mb91101 Datasheet - Page 6

• Manufacturer Part Number: mb91101
• Description: 32-bit Risc Microcontroller Cmos
• Manufacturer: Fujitsu Microelectronics, Inc.

6
MB91101/MB91101A
*1: FPT-100P-M05
*2: FPT-100P-M06
33 to 39,
59 to 64,
25 to 32
44 to 58
LQFP*
PIN DESCRIPTION
42,
66,
41
67
68
19
20
21
22
23
24
Pin no.
1
36 to 42,
62 to 67,
28 to 35
47 to 61
QFP*
45,
69,
44
70
71
22
23
24
25
26
27
2
D24 to D30,
A16 to A21,
P60 to P65,
D16 to D23
P20 to P27
A01 to A15
Pin name
BGRNT
EOP0
WR0
WR1
RDY
BRQ
A00,
A22,
P66,
D31
A23
P67
A24
P80
P81
P82
P85
RD
Circuit
type
C
C
C
C
F
F
L
F
L
L
F
Bit 16 to bit 23 of external data bus
Can be configured as I/O ports when external data bus width is
set to 8-bit.
Bit 24 to bit 31 of external data bus
Bit 00 to bit 15 of external address bus
Bit 16 to bit 23 of external address bus
Can be configured as I/O ports when not used as address bus.
Bit 24 of external address bus
Can be configured as DMAC EOP output (ch. 0) when DMAC
EOP output is enabled.
External ready input
Inputs “0” when bus cycle is being executed and not completed.
Can be configured as a port when RDY is not used.
External bus release acknowledge output
Outputs “L” level when external bus is released.
Can be configured as a port when BGRNT is not used.
External bus release request input
Inputs “1” when release of external bus is required.
Can be configured as a port when BRQ is not used.
Read strobe output pin for external bus
Write strobe output pin for external bus
Relation between control signals and effective byte locations is
as follows:
WR1 is High-Z during resetting.
Attach an external pull-up resister when using at 16-bit bus
width.
Can be configured as a port when WR1 is not used.
D15 to D08
D07 to D00
16-bit bus width
Description
WR0
WR1
(I/O port enabled)
8-bit bus width
WR0
(Continued)