AN1740 Freescale Semiconductor / Motorola, AN1740 Datasheet - Page 5
AN1740
Manufacturer Part Number
AN1740
Description
Applications Using the Analog Subsystem on MC68HC05JJ/JP Series Microcontrollers
Manufacturer
Freescale Semiconductor / Motorola
Datasheet
1.AN1740.pdf
(80 pages)
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AN1740
MOTOROLA
(HOLD) • (DHOLD)
(VREF) • (MUX1) • (MUX2) • (MUX3) • (MUX4)
TCMP
TCAP
PB1
AN1
PB3
AN3
PB4
AN4
V
PB0
AN0
PB2
AN2
SS
PORTB
PORTB
PORTB
PORTB
PORTB
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
V
–
AOFF
+
V
DD
TEMPERATURE
V
DD
INTERNAL
(VREF) • (MUX1) • (MUX2) • (MUX3) • (MUX4)
DIODE
MUX2
MUX3
MUX4
Figure 1. Analog Subsystem Block Diagram
MUX1
Freescale Semiconductor, Inc.
I
DISCHG
For More Information On This Product,
I
CHG
V
DD
DHOLD
Go to: www.freescale.com
(HOLD) • (DHOLD)
DHOLD
HOLD
OLVL
OFFSET
100 MV
CURRENT
CONTROL
CHARGE
LOGIC
–
SAMPLE
(10 PF)
+
+
–
–
CAP
COMP2
COMP1
OUTPUT
BUFFER
PORT B
CP1EN
CP2EN
(VOFF) • (OPT)
INV
INV
CPF2
CHG
ATD1
ATD2
ISEN
COE1
OPT
V
V
DD
DD
Analog Subsystem Overview
CPFR1
D
C
D
C
CPIE
CPFR2
R
R
Q
Q
ICEN
TCAP
Application Note
DENOTES
INTERNAL
ANALOG V
ANALOG
INTERRUPT
CPF1
CPF2
CMP2
CMP1
TCAP INPUT
16-BIT
TIMER
SS
5
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