
7
MB90630A Series
(Continued)
STBC: Incorporates standby control
*1: LQFP (FPT-100P-M05)
*2: QFP (FPT-100P-M06)
Pin no.
Pin name
Circuit
type
Function
LQFP*1
QFP*2
12
14
P34
H
(STBC)
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).
13
15
P35
H
(STBC)
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 (HAK) pin.
14
16
P36
H
(STBC)
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 (RDY) pin.
15
17
P37
H
(STBC)
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 (CLK) pin.
16
18
P40
G
(STBC)
General-purpose I/O port
When UART0 is operating, the data at the pin is used as the
serial input (SIN0).
Can be set as an open-drain output port (OD40 = “1”) by the
open-drain control register (ODR4). The setting does not apply
for ports set as inputs (D40 = “0”: invalid at the input setting).
SIN0
Functions as the UART0 serial input (SIN0).
17
19
P41
F
(STBC)
General-purpose I/O port
Functions as the SOT0 pin if the SOE bit in the UMC register is
“1”.
Can be set as an open-drain output port (OD41 = “1”) by the
open-drain control register (ODR4). The setting does not apply
for ports set as inputs (D41 = “0”: invalid at the input setting).
SOT0
Functions as the UART0 serial data output pin (SOT0).
18
20
P42
G
(STBC)
General-purpose I/O port
When UART0 is operating in external shift clock mode, the
data at the pin is used as the clock input (SCK0). Also,
functions as the SCK0 pin if the SOE bit in the UMC register is
“1”.
Can be set as an open-drain output port (OD42 = “1”) by the
open-drain control register (ODR4). The setting does not apply
for ports set as inputs (D42 = “0”: invalid at the input setting).
SCK0
Functions as the UART0 serial clock I/O pin (SCK0).