9
MB90210 Series
* : FPT-80P-M06, FPT-80C-C02
(Continued)
Pin no.
Pin name
Circuit
type
Function
QFP*
20
P40
E
General-purpose I/O port
This port is available when the UART (ch.2) serial data output
from SOD3 is disabled either in the single-chip mode or when the
upper address control register setting is “port.”
A16
Output pin for external address bus A16
This pin is available when the UART (ch.2) serial data output
from SOD3 is disabled in an external-bus mode and when the
upper address control register setting is “address.”
SOD3
UART (ch.2) serial data output pin (SOD3)
This pin is available when the UART (ch.2) serial data output is
enabled.
21
P41
E
General-purpose I/O port
This port is available when the UART (ch.2) clock output is
disabled either in the single-chip mode or when the upper
address control register setting is “port.”
A17
Output pin for external address bus A17
This pin is available when the UART (ch.2) clock output is
disabled in an external-bus mode and when the upper address
control register setting is “address.”
SCK2
UART (ch.2) clock output pin (SCK2)
This pin is available when the UART (ch.2) clock output is
enabled.
UART (ch.2) external clock input pin (SCK2)
This pin is available when the port is in input mode and the UART
(ch.2) specification is external clock mode.
22
P42
E
General-purpose I/O port
This port is available in the single-chip mode or when the upper
address control register setting is “port.”
A18
Output pin for external address bus A18
This pin is available in an external-bus mode and when the upper
address control register setting is “address.”
SID2
UART (ch.2) serial data input pin (SID2)
Since this input is used whenever the SID2 is in input operation,
the output by any other function must be suspended unless the
output is intentionally performed.
23
P43
E
General-purpose I/O port
This port is available when the UART (ch.2) serial data output
from SOD2 is disabled either in the single-chip mode or when the
upper address control register setting is “port.”
A19
Output pin for external address bus A19
This pin is available when the UART (ch.2) serial data output
from SOD2 is disabled in an external-bus mode and when the
upper address control register setting is “address.”
SOD2
UART (ch.2) serial data output pin (SOD2)
This pin is available when the UART (ch.2) serial data output
from SOD2 is enabled.