
1.6 Pin Description
12
Chapter 1: Overview
26
AVCC
Power supply
Analog circuit power supply. Power must only be switched on
or off when a potential greater than AVCC is applied to the
VCC terminal.
27
AVRH
Power supply
This is an A/D converter external reference voltage input pin.
This pin should only be switched on or off when a potential
greater than AVRH is applied to the AVCC pin.
28
AVRL
Power supply
This is an A/D converter external reference voltage
input pin.
29
AVSS
Power supply
Analog circuit ground level pin.
30 to
31
P60/AN0 and
P61/AN1
H
P60 and P61 are N-channel open drain type I/O ports. When
the corresponding bits in the ADER register is set to '0,' the
level of these pins is read, resulting from read access to data
registers by all read instructions (except for read-modify-write
instructions). Values written in data registers are output
directly from these pins.
AN0 and AN1 are A/D converter analog input pins. To use this
function, set the corresponding bit in the ADER register to '1'
and set the corresponding bits in the data register to '1.'
32
VSS
Power supply
Digital circuit ground level pin.
33 to
34
P62/AN2 and
P63/AN3
H
P62 and P63 are N-channel open drain type I/O ports. When
the corresponding bits in the ADER register is set to '0,' the
level of these pins is read, resulting from read access to data
registers by all read instructions (except for read-modify-write
instructions). Values written in data registers are output
directly from these pins.
AN2 to AN3 are A/D converter analog input pins. To use this
function, set the corresponding bit in the ADER register to '1'
and set the corresponding bits in the data register to '1.'
35 to
36
P66/AN6 and
P67/AN7
H
P66 and P67 are N-channel open drain type I/O ports. When
the corresponding bits in the ADER register is set to '0,' the
level of these pins is read, resulting from read access to data
registers by all read instructions (except for read-modify-write
instructions). Values written in data registers are output
directly from these pins.
AN6 and AN7 are A/D converter analog input pins. To use this
function, set the corresponding bit in the ADER register to '1'
and set the corresponding bits in the data register to '1.'
37
OPEN
Open terminal. No internal connection.
38
OPEN
Open terminal. No internal connection.
39 to
41
MD0 to MD2
C
Operating mode setting input pins. These pins should be
directly connected to Vcc or Vss.
42
HSTX
D
Hardware standby input pin.
Table 1.6 Pin Description (Continued)
Pin No.
Name
Circuit type
Function