MSP430F147 Datasheet, PDF (33/59 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430x13x, MSP430x14x, MSP430x14x1
MIXED SIGNAL MICROCONTROLLER
SLAS272F − JULY 2000 − REVISED JUNE 2004
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
main DCO characteristics
D Individual devices have a minimum and maximum operation frequency. The specified parameters for
fDCOx0 to fDCOx7 are valid for all devices.
D All ranges selected by Rsel(n) overlap with Rsel(n+1): Rsel0 overlaps with Rsel1, ... Rsel6 overlaps with
Rsel7.
D DCO control bits DCO0, DCO1, and DCO2 have a step size as defined by parameter SDCO.
D Modulation control bits MOD0 to MOD4 select how often fDCO+1 is used within the period of 32 DCOCLK
cycles. The frequency f(DCO) is used for the remaining cycles. The frequency is an average equal to
f(DCO) × (2^MOD/32 ).
DCO when using R_OSC (see Note 1)
PARAMETER
TEST CONDITIONS
fDCO, DCO output frequency
Rsel = 4, DCO = 3, MOD = 0, DCOR = 1,
TA = 25°C
VCC
2.2 V
3V
MIN
NOM MAX UNIT
1.8±15%
MHz
1.95±15%
MHz
Dt, Temperature drift
Rsel = 4, DCO = 3, MOD = 0, DCOR = 1
2.2 V/3 V
±0.1
Dv, Drift with VCC variation Rsel = 4, DCO = 3, MOD = 0, DCOR = 1
2.2 V/3 V
10
NOTES: 1. ROSC = 100kΩ. Metal film resistor, type 0257. 0.6 watt with 1% tolerance and TK = ±50ppm/°C.
crystal oscillator, LFXT1 oscillator (see Note 1)
%/°C
%/V
PARAMETER
TEST CONDITIONS
MIN
NOM MAX
UNIT
CXIN
Integrated input capacitance
XTS=0; LF oscillator selected
VCC = 2.2 V/3 V
XTS=1; XT1 oscillator selected
VCC = 2.2 V/3 V
12
pF
2
CXOUT
Integrated output capacitance
XTS=0; LF oscillator selected
VCC = 2.2 V/3 V
XTS=1; XT1 oscillator selected
VCC = 2.2 V/3 V
12
pF
2
VIL
Input levels at XIN
VIH
VCC = 2.2 V/3 V (see Note 2)
VSS
0.8 × VCC
0.2 × VCC
V
VCC
V
NOTES: 1. The oscillator needs capacitors at both terminals, with values specified by the crystal manufacturer.
2. Applies only when using an external logic-level clock source. Not applicable when using a crystal or resonator.
crystal oscillator, XT2 oscillator (see Note 1)
PARAMETER
TEST CONDITIONS
MIN
NOM MAX
UNIT
CXT2IN Input capacitance
VCC = 2.2 V/3 V
2
pF
CXT2OUT Output capacitance
VCC = 2.2 V/3 V
2
pF
VIL
Input levels at XT2IN
VIH
VCC = 2.2 V/3 V (see Note 2)
VSS
0.8 × VCC
0.2 × VCC
V
VCC
V
NOTES: 1. The oscillator needs capacitors at both terminals, with values specified by the crystal manufacturer.
2. Applies only when using an external logic-level clock source. Not applicable when using a crystal or resonator.
USART0, USART1 (see Note 1)
PARAMETER
TEST CONDITIONS
MIN NOM MAX UNIT
t(_τ)
USART0/1: deglitch time
VCC = 2.2 V
VCC = 3 V
200 430 800
ns
150 280 500
NOTE 1: The signal applied to the USART0/1 receive signal/terminal (URXD0/1) should meet the timing requirements of t_(τ) to ensure that the
URXS flip-flop is set. The URXS flip-flop is set with negative pulses meeting the minimum-timing condition of t_(τ). The operating
conditions to set the flag must be met independently from this timing constraint. The deglitch circuitry is active only on negative
transitions on the URXD0/1 line.
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