![](http://datasheet.mmic.net.cn/330000/MB90F583B_datasheet_16438001/MB90F583B_10.png)
MB90580B Series
10
*1: FPT-100P-M06
*2: FPT-100P-M05
(Continued)
Pin no.
Pin name
Circuit
type
Function
QFP*
1
LQFP*
2
14
12
P34
F
(CMOS/H)
General-purpose I/O port
Functions as the HRQ pin in external bus mode if the HDE bit in the
EPCR register is “1”.
HRQ
Functions as the hold request input pin (HRQ) in external bus mode.
15
13
P35
F
(CMOS/H)
General-purpose I/O port
Functions as the HAK pin in external bus mode if the HDE bit in the
EPCR register is “1”.
HAK
Functions as the hold acknowledge output pin (HAK) in external bus
mode.
16
14
P36
F
(CMOS/H)
General-purpose I/O port
Functions as the RDY pin in external bus mode if the RYE bit in the
EPCR register is “1”.
RDY
Functions as the external ready input pin (RDY) in external bus mode.
17
15
P37
F
(CMOS/H)
General-purpose I/O port
Functions as the CLK pin in external bus mode if the CKE bit in the
EPCR register is “1”.
CLK
Functions as the machine cycle clock output pin (CLK) in external bus
mode.
18
16
P40
E
(CMOS/H)
General-purpose I/O port.
This pin serves as an open-drain output port with OD40 in the open-
drain control setting register (ODR4) set to “1”. [The pin is disabled
with the input setting (DDR4 register: D40=“0”).]
SIN0
UART0 serial data input (SIN0) pin.
When UART0 is operating for input, this input is used as required and
thus the output from any other function to the pin must be off unless
used intentionally.
19
17
P41
E
(CMOS/H)
General-purpose I/O port.
This pin serves as an open-drain output port with OD41 in the open-
drain control setting register (ODR4) set to “1”. [The pin is disabled
with the input setting (DDR4 register: D41=“0”).]
SOT0
UART0 serial data output pin (SOT0).
This pin is enabled with the UART0 serial data output enabled.
20
18
P42
E
(CMOS/H)
General-purpose I/O port.
This pin serves as an open-drain output port with OD42 in the open-
drain control setting register (ODR4) set to “1”. [The pin is disabled
with the input setting (DDR4 register: D42=“0”).]
SCK0
UART0 serial clock I/O pin (SCK0).
This pin is enabled with the UART0 clock output enabled.