Rainbow Electronics 71M6542G - Manual (Page 161)

v1.1 © 2008–2011 Teridian Semiconductor Corporation 161
6.8.4 I/O Equivalent Circuits
Figure 51: I/O Equivalent Circuits
Oscillator Equivalent Circuit
Type 8:
Oscillator I/O
Digital Input Equivalent Circuit
Type 1:
Standard Digital Input or
pin configured as DIO Input
with Internal Pull-Up
GNDD
110K
V3P3D
CMOS
Input
V3P3D
Digital
Input
Pin
Digital Input
Type 2:
Pin configured as DIO Input
with Internal Pull-Down
GNDD
110K
GNDD
CMOS
Input
V3P3D
Digital
Input
Pin
Digital Input Type 3:
Standard Digital Input or
pin configured as DIO Input
GNDD
CMOS
Input
V3P3D
Digital
Input
Pin
CMOS
Output
GNDD
V3P3D
GNDD
V3P3D
Digital Output Equivalent Circuit
Type 4:
Standard Digital Output or
pin configured as DIO Output
Digital
Output
Pin
LCD Output Equivalent Circuit
Type 5:
LCD SEG or
pin configured as LCD SEG
LCD
Driver
GNDD
LCD SEG
Output
Pin
To
MUX
GNDA
V3P3A
Analog Input Equivalent Circuit
Type 6:
ADC Input
Analog
Input
Pin
Comparator Input Equivalent
Circuit Type 7:
Comparator Input
GNDA
V3P3A
To
Comparator
Comparator
Input
Pin
To
Oscillator
GNDD
Oscillator
Pin
VREF Equivalent Circuit
Type 9:
VREF
from
internal
reference
GNDA
V3P3A
VREF
Pin
V2P5 Equivalent Circuit
Type 10:
V2P5
from
internal
reference
GNDD
V3P3D
V2P5
Pin
VLCD Equivalent Circuit
Type 11:
VLCD Power
GNDD
LCD
Drivers
VLCD
Pin
VBAT Equivalent Circuit
Type 12:
VBAT Power
GNDD
Power
Down
Circuits
VBAT
Pin
V3P3D Equivalent Circuit
Type 13:
V3P3D
from
V3P3SYS
V3P3D
Pin
from
VBAT
10
40