MB90550A/550B Series
Pin no.
QFP
LQFP
Pin name
P34
Circuit type
Function
General-purpose I/O port.
This function is enabled in single-chip mode
Hold request input pin.
This function is enabled in an external-bus enabled mode.
General-purpose I/O port.
This function is enabled in single-chip mode.
Hold acknowledge output pin.
This function is enabled in an external-bus enabled mode.
General-purpose I/O port.
This function is enabled in single-chip mode.
Ready signal input pin.
This function is enabled in an external-bus enabled mode.
General-purpose I/O port.
This function is enabled in single-chip mode.
CLK output pin.
This function is enabled in an external-bus enabled mode.
General-purpose I/O port.
Serves as an open-drain output port (OD40 = 1) depending on the
setting of the open-drain control setting register (ODR4).
(D40 = 0: Disabled when the port is set for input.)
UART serial clock I/O pin.
This function is enabled with the UART clock output enabled.
General-purpose I/O port.
Serves as an open-drain output port (OD41 = 1) depending on the
setting of the open-drain control setting register (ODR4).
(D41 = 0: Disabled when the port is set for input.)
UART serial data output pin.
This function is enabled with the UART serial data output enabled.
General-purpose I/O port.
Serves as an open-drain output port (OD42 = 1) depending on the
setting of the open-drain control setting register (ODR4).
(D42 = 0: Disabled when the port is set for input.)
UART serial data input pin. Since this input is used as required while
the UART is operating for input, the output by any other function
must be off unless used intentionally.
General-purpose I/O port.
Serves as an open-drain output port (OD43 = 1) depending on the
setting of the open-drain control setting register (ODR4).
(D43 = 0: Disabled when the port is set for input.)
Extended I/O serial clock I/O pin. This function is enabled with the
extended I/O serial clock output enabled.
(Continued)
14
12
HRQ
P35
E
(CMOS)
15
13
HAK
P36
E
(CMOS)
16
14
RDY
P37
E
(CMOS)
17
15
CLK
E
(CMOS)
P40
18
16
SCK
F
(CMOS/H)
P41
19
17
SOT
F
(CMOS/H)
P42
20
18
SIN
F
(CMOS/H)
P43
21
19
SCK1
F
(CMOS/H)
8
DS07-13706-6E
FUJITSU [ FUJITSU COMPONENT LIMITED. ]
