Advertisement
11.2. Input Pins and External Connection
11.2.1. Input Pins
Table 11.2.1.1 shows the SVD3 input pins.
Pin name
EXSVDn
If the port is shared with the EXSVDn pin and other functions, the EXSVDn function must be assigned to
the port before SVD3 can be activated. For more information, refer to the "I/O Ports" chapter.
11.2.2. External Connection
Figure 11.2.2.1 Connection between EXSVD1 Pin and External Power Supply
R
resistance value must be determined so that it will be sufficiently smaller than the EXSVD input
EXT
impedance R
. For the EXSVDn pin input voltage range and the EXSVD input impedance, refer to
EXSVD
"Supply Voltage Detector Characteristics" in the "Electrical Characteristics" chapter.
11-2
Table 11.2.1.1 SVD3 Input Pins
I/O
Initial status
A*
A (Hi-Z)*
External power
supply/regulator
etc.
EXSVDn
Seiko Epson Corporation
Function
External power supply voltage detection pin
* Indicates the status when the pin is configured for SVD3.
SVD3
SVD
analog block
R
EXSVD
V
SS
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
Advertisement
