參數(shù)資料
型號： MSP430F148IRTDT
廠商： TEXAS INSTRUMENTS INC
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 8 MHz, RISC MICROCONTROLLER, PQCC64
封裝： GREEN, PLASTIC, QFN-64
文件頁數(shù)： 27/65頁
文件大小： 1216K
代理商： MSP430F148IRTDT
MSP430x13x, MSP430x14x, MSP430x14x1
MIXED SIGNAL MICROCONTROLLER
SLAS272F JULY 2000 REVISED JUNE 2004
33
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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)
× (2MOD/32 ).
DCO when using ROSC (see Note 1)
PARAMETER
TEST CONDITIONS
VCC
MIN
NOM
MAX
UNIT
fDCO, DCO output frequency
Rsel = 4, DCO = 3, MOD = 0, DCOR = 1,
2.2 V
1.8
±15%
MHz
fDCO, DCO output frequency
Rsel = 4, DCO = 3, MOD = 0, DCOR = 1,
TA = 25°C
3 V
1.95
±15%
MHz
Dt, Temperature drift
Rsel = 4, DCO = 3, MOD = 0, DCOR = 1
2.2 V/3 V
±0.1
%/
°C
Dv, Drift with VCC variation
Rsel = 4, DCO = 3, MOD = 0, DCOR = 1
2.2 V/3 V
10
%/V
NOTES:
1. ROSC = 100k. Metal film resistor, type 0257. 0.6 watt with 1% tolerance and TK = ±50ppm/°C.
crystal oscillator, LFXT1 oscillator (see Note 1)
PARAMETER
TEST CONDITIONS
MIN
NOM
MAX
UNIT
CXIN
Integrated input capacitance
XTS=0; LF oscillator selected
VCC = 2.2 V/3 V
12
pF
CXIN
Integrated input capacitance
XTS=1; XT1 oscillator selected
VCC = 2.2 V/3 V
2
pF
CXOUT
Integrated output capacitance
XTS=0; LF oscillator selected
VCC = 2.2 V/3 V
12
pF
CXOUT
Integrated output capacitance
XTS=1; XT1 oscillator selected
VCC = 2.2 V/3 V
2
pF
VIL
Input levels at XIN
VCC = 2.2 V/3 V (see Note 2)
VSS
0.2
× VCC
V
VIH
Input levels at XIN
VCC = 2.2 V/3 V (see Note 2)
0.8
× VCC
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
VCC = 2.2 V/3 V (see Note 2)
VSS
0.2
× VCC
V
VIH
Input levels at XT2IN
VCC = 2.2 V/3 V (see Note 2)
0.8
× VCC
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( )
USART0/1: deglitch time
VCC = 2.2 V
200
430
800
ns
t(τ)
USART0/1: deglitch time
VCC = 3 V
150
280
500
ns
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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