MC68HC705JJ7 Datasheet, PDF (72/164 Pages) Freescale Semiconductor, Inc – Microcontrollers

Analog Subsystem
PORTB
LOGIC
PB0
AN0
PB3/AN3/TCAP
V_DD
I_CHG
V_DD
I_DISCHG
INTERNAL
TEMPERATURE
DIODE
V_DD
CHARGE
CURRENT
CONTROL
LOGIC
CP2EN
+
COMP2
–
INV
2 TO 1 _TCAP
MUX
CHG
ATD1
ATD2
ISEN
CP2EN
ICEN
CP1EN
CPIE
$001D
ANALOG
INTERRUPT
PORTB
LOGIC
PB1
AN1
PORTB
LOGIC
PB2
AN2
PB3
AN3
TCAP
PORTB
LOGIC
PB4
AN4
TCMP
PORTB
LOGIC
V_AOFF
V_SS
–+
V_REF
80 kΩ
80 kΩ
SAMPLE
CAP
CPF2
CPF1
CMP2
CMP1
VOFF
MUX1
100 MV
OFFSET
$001E
CP1EN
OPT (COPR)
MUX2
MUX3
+
COMP1
–
V_REF ^INV
HOLD
DHOLD
INV
V_REF
MUX4
MUX4
OLVL ^{PORT B}
CONTROL
LOGIC
COE1
OPT (COPR)
MUX3
MUX2
MUX1
$0003
V_SS
AV_SS = V_SS = V_AOFF
MUX4
MUX3
MUX2
MUX1
Figure 8-1. Analog Subsystem Block Diagram
DENOTES
INTERNAL
ANALOG V_SS
MC68HC705JJ7 • MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
72
Freescale Semiconductor