MC68HC705JJ7 Datasheet, PDF (145/164 Pages) Freescale Semiconductor, Inc – Microcontrollers

Analog Subsystem Characteristics (5.0 Vdc)
15.9 Analog Subsystem Characteristics (5.0 Vdc)
NOTE
See Figure 15-6.
Characteristic⁽¹⁾
Symbol
Voltage comparators
Input offset voltage
Common-mode range
Comparator 1 input impedance
Comparator 2 input impedance
Direct input to comparator 2 (HOLD = 1, DHOLD = 0)
Divider input to comparator 2 (HOLD = 0, DHOLD = 1)
Input divider ratio (comparator 2, HOLD = 0, DHOLD =1)
V_In = 0 to V_DD –1.5 V
Analog subsystem internal V_SS offset
Sum of comparator offset and IR drop through V_SS
Channel selection multiplexer switch resistance
External current source (PB0/AN0)
Source current (V_Out = V_DD/2)
Source current linearity (V_Out = 0 to V_DD –1.5 Vdc)
Discharge sink current (V_Out = 0.4 V)
External capacitor (connected to PB0/AN0)
Voltage range
Discharge time
Value of external ramping capacitor
V_IO
V_CMR
Z_In
Z_In
Z_In
R_DIV
V_AOFF
R_MUX
I_CHG
I_CHG
I_DIS
V_CAP
t_DIS
C_EXT
Internal sample and hold capacitor
Capacitance
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
C_SH
t_SHCHG
t_SHDCHG
t_SHTCHG
C_SHDIS
Internal temperature sensing diode
Voltage at T_J = 25°C
V_D
Temperature change in voltage
TC_D
1. +4.5 ≤ V_DD ≤ +5.5 V, V_SS = 0 V, T_L ≤ T_A ≤ T_H, unless otherwise noted
Min
—
—
800
800
80
0.49
20
—
85
—
1.1
V_SS
5
—
8
1
2
1
—
0.65
1.8
Max
Unit
15
mV
V_DD –1.5
V
—
kΩ
—
kΩ
—
kΩ
0.51
40
mV
3
kΩ
113
µA
±1
%FS
—
mA
V_DD –1.5
10
2
V
ms/µF
µF
13
pF
—
µs
—
µs
—
µs
0.2
V/sec
0.71
V
2.0
mV/°C
MC68HC705JJ7 • MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
Freescale Semiconductor
145