List Of Pin Functions - Fujitsu FR60 Hardware Manual

1.6

List of Pin Functions

This section describes the pin functions of the MB91V301A, MB91302A.
■ Description of Pin Functions
Table 1.6-1 lists the pin of the MB91V301A, MB91302A and their functions.
Table 1.6-1 List of Pin Function (except for Power Supply, and GND Pins) (1 / 10)
Pin no.
MB91302A
MB91V301A
166 to 169,
132 to 139
172 to 175
142 to 144, 178 to 180,
1 to 5 2, 5 to 8
8 to 15 11 to 18
21 to 24,
18 to 25
27 to 30
28 33
29 34
30 35
31 36
32 37
/
Pin name I O circuit type
D00 to D07
J
P00 to P07
D08 to D15
J
P10 to P17
D16 to D23
J
P20 to P27
D24 to D31 C
RDY
J
P80
BGRNT
J
P81
BRQ
J
P82
RD C
WR0/
C
DQMUU
Function
External data bus bits 0 to 7. It is available in the
external bus mode.
Can be used as ports in 8-bit or 16-bit external bus
mode.
External data bus bits 8 to 15.
It is available in the external bus mode.
Can be used as ports in 8-bit or 16-bit external bus
mode.
External data bus bits 16 to 23.
It is available in the external bus mode.
Can be used as ports in 8-bit external bus mode.
External data bus bits 24 to 31.
It is available in the external bus mode.
External ready input. The pin has this function
when external ready input is enabled. Active level
is "H".
General purpose input/output port. The pin has
this function when external ready input is disabled.
Acknowledge output for external bus release.
Outputs "L" when the external bus is released. The
pin has this function when output is enabled.
General purpose input/output port. The pin has
this function when output is disabled for external
bus release acknowledge.
External bus release request input. Input "1" to
request release of the external bus. The pin has
this function when input is enabled. The active
level is "H".
General purpose input/output port. The pin has
this function when the external bus release
request input is disabled.
External bus read strobe output. This pin is
enabled at external bus mode.
External bus write strobe output. This pin is
enabled at external bus mode. When WR0 is used
as the write strobe, this becomes the byte-enable
pin (UUB).
CHAPTER 1 OVERVIEW
15