Freescale Semiconductor, Inc.
Ele c tric a l Sp e c ific a tions
15.10 Ana log Sub syste m Cha ra c te ristic s (5.0 Vd c )
Characteristic
Symbol
Min
Max
Unit
Voltage Comparators
Input Offset Voltage
Common-Mode Range
V
—
—
15
mV
V
IO
V
V
–1.5
CMR
DD
Comparator 1 Input Impedance
Z
800
—
kΩ
IN
Comparator 2 Input Impedance
Direct Input to Comparator 2 (HOLD = 1, DHOLD = 0)
Divider Input to Comparator 2 (HOLD = 0, DHOLD = 1)
Z
Z
800
80
—
—
kΩ
kΩ
IN
IN
Input Divider Ratio (Comparator 2, HOLD = 0, DHOLD =1)
R
0.49
0.51
DIV
V
= 0 to V –1.5V
IN
DD
Analog Subsystem Internal V Offset
SS
V
20
—
40
3
mV
AOFF
Sum of comparator offset and IR drop through V
Channel Selection Multiplexer Switch Resistance
External Current Source (PB0/AN0)
SS
R
kΩ
MUX
Source Current (V
Source Current Linearity (V
Discharge Sink Current (V
= V /2)
I
I
I
85
—
1.1
113
± 1
—
µA
%FS
mA
OUT
DD
CHG
CHG
= 0 to V –1.5 Vdc)
DD
OUT
= 0.4 V)
OUT
DIS
External Capacitor (connected to PB0/AN0)
Voltage Range
Discharge Time
V
V
5
—
V –1.5
DD
V
ms/µF
µF
CAP
SS
t
10
2
DIS
Value of external ramping capacitor
C
EXT
Internal Sample and Hold Capacitor
Capacitance
C
8
13
pF
SH
Charge/Discharge Time (0 to 3.5 Vdc)
Direct Connection (HOLD = 1, DHOLD = 0)
Divided Connection (HOLD = 0, DHOLD = 1)
Temperature Diode Connection (HOLD = 1, DHOLD = 1)
Leakage Discharge Rate
t
1
2
1
—
—
—
µs
µs
µs
SHCHG
t
SHDCHG
t
SHTCHG
C
—
0.2
V/sec
SHDIS
Internal Temperature Sensing Diode
Voltage (at T = 25 °C)
Temperature Change in Voltage
V
TC
0.65
2.0
0.71
2.2
V
J
D
mV/°C
D
NOTE:
1. +4.5 ≤ VDD ≤ +5.5 V, VSS = 0 V, TL ≤ TA ≤ TH, unless otherwise noted
General Release Specification
MC68HC705JJ7/MC68HC705JP7 — Rev. 3.0
Electrical Specifications
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