![](http://datasheet.mmic.net.cn/330000/MB90P224BPF_datasheet_16438137/MB90P224BPF_12.png)
MB90220 Series
12
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* :FPT-120P-M03, FPT-120C-C02
(Continued)
Pin no.
Pin name
Circuit
type
Function
QFP*
75
PC3
C
General-purpose I/O port
This function is valid when the UART1 clock output specification is
“disabled”.
SCK3
UART1 clock output pin
The clock output function is valid when the UART1 clock output
specification is “enabled”.
UART1 external clock input pin
This function is valid when the port is in input mode and the UART1
specification is external clock mode.
76
PC4
C
General-purpose I/O port
This function is always valid.
CTS0
UART0 (ch.0) Clear To Send input pin
When the UART0 (ch.0) CTS function is enabled, this input may be
used suddenly at any time; therefore, it is necessary to stop output by
other functions on this pin, except when using it for output
deliberately.
77
PC5
C
General-purpose I/O port
This function is always valid.
TRG0
16-bit PPG timer trigger input pin
This function is valid when the 16-bit PPG timer trigger input
specification is enabled.
The data on this pin is read as 16-bit PPG timer trigger input (TRG0).
During this operation, the input may be used suddenly at any time;
therefore, it is necessary to stop output by other functions on this pin,
except when using it for output deliberately.
8,
54,
94
V
CC
Power
supply
Power supply for digital circuitry
33,
63,
91,
119
V
SS
Power
supply
Ground level for digital circuitry
42
AV
CC
Power
supply
Power supply for analog circuitry
When turning this power supply on or off, always be sure to first apply
electric potential equal to or greater than AV
CC
to V
CC
.
During normal operation AV
CC
should be equal to V
CC
.
43
AVRH
Power
supply
Reference voltage input for analog circuitry
When turning this pin on or off, always be sure to first apply electric
potential equal to or greater than AVRH to AV
CC
.
44
AVRL
Power
supply
Reference voltage input for analog circuitry
45
AV
SS
Power
supply
Ground level for analog circuitry