MSP430F6438, MSP430F6436, MSP430F6435, MSP430F6433
SLAS720D – AUGUST 2010 – REVISED DECEMBER 2015
5.28 Timer_A, Timers TA0, TA1, and TA2
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V
CC
MIN
MAX
UNIT
Internal: SMCLK, ACLK
f
TA
Timer_A input clock frequency
External: TACLK
1.8 V, 3 V
20
MHz
Duty cycle = 50% ±10%
All capture inputs,
t
TA,cap
Timer_A capture timing
Minimum pulse duration required for
1.8 V, 3 V
20
ns
capture
5.29 Timer_B, Timer TB0
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V
CC
MIN
MAX
UNIT
Internal: SMCLK, ACLK
f
TB
Timer_B input clock frequency
External: TBCLK
1.8 V, 3 V
20
MHz
Duty cycle = 50% ±10%
All capture inputs,
t
TB,cap
Timer_B capture timing
Minimum pulse duration required for
1.8 V, 3 V
20
ns
capture
5.30 Battery Backup
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V
CC
MIN
TYP
MAX
UNIT
T
A
= –40°C
0.43
VBAT = 1.7 V,
T
A
= 25°C
0.52
DVCC not connected,
T
A
= 60°C
0.58
RTC running
T
A
= 85°C
0.64
T
A
= –40°C
0.50
VBAT = 2.2 V,
T
A
= 25°C
0.59
Current into VBAT terminal if no
I
VBAT
DVCC not connected,
µA
primary battery is connected
T
A
= 60°C
0.64
RTC running
T
A
= 85°C
0.71
T
A
= –40°C
0.68
VBAT = 3 V,
T
A
= 25°C
0.75
DVCC not connected,
T
A
= 60°C
0.79
RTC running
T
A
= 85°C
0.86
General
V
SVSH_IT-
SVSHRL = 0
1.59
1.69
V
SWITCH
Switch-over level (V
CC
to VBAT)
C
VCC
= 4.7 µF
SVSHRL = 1
1.79
1.91
V
SVSHRL = 2
1.98
2.11
SVSHRL = 3
2.10
2.23
ON-resistance of switch
R
ON_VBAT
V
BAT
= 1.8 V
0 V
0.35
1
k
Ω
between VBAT and VBAK
1.8 V
0.6
±5%
VBAT to ADC input channel 12:
V
BAT3
3 V
1.0
±5%
V
V
BAT
divided, V
BAT3
= V
BAT
/3
3.6 V
1.2
±5%
t
Sample,
VBAT to ADC: Sampling time
ADC12ON = 1,
1000
ns
VBAT3
required if VBAT3 selected
Error of conversion result
≤
1 LSB
V
CHVx
Charger end voltage
CHVx = 2
2.65
2.7
2.9
V
CHCx = 1
5
R
CHARGE
Charge limiting resistor
CHCx = 2
10
k
Ω
CHCx = 3
20
Copyright © 2010–2015, Texas Instruments Incorporated
Specifications
33
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