MSP430X15X Datasheet, PDF (37/73 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430x15x, MSP430x16x, MSP430x161x
MIXED SIGNAL MICROCONTROLLER
SLAS368E − OCTOBER 2002 − REVISED AUGUST 2006
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
f_(DCOx0) to f_(DCOx7) are valid for all devices.
D All ranges selected by Rsel(n) overlap with Rsel(n+1): Rsel0 overlaps Rsel1, ... Rsel6 overlaps Rsel7.
D DCO control bits DCO0, DCO1, and DCO2 have a step size as defined by parameter S_DCO.
D Modulation control bits MOD0 to MOD4 select how often f_(DCO+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_average + _MOD
32 f_(DCO) f_(DCO)1)
f_(DCO))(32*MOD) f_(DCO)1)
DCO when using R_OSC (see Note 1)
PARAMETER
TEST CONDITIONS
f_DCO, DCO output frequency
R_sel = 4, DCO = 3, MOD = 0, DCOR = 1,
T_A = 25°C
V_CC
2.2 V
3V
MIN
NOM
1.8±15%
1.95±15%
D_t, Temperature drift
R_sel = 4, DCO = 3, MOD = 0, DCOR = 1
2.2 V/3 V
±0.1
D_v, Drift with V_CC variation
R_sel = 4, DCO = 3, MOD = 0, DCOR = 1
2.2 V/3 V
10
NOTES: 1. R_OSC = 100kΩ. Metal film resistor, type 0257. 0.6 watt with 1% tolerance and T_K = ±50ppm/°C.
crystal oscillator, LFXT1 oscillator (see Note 1)
MAX
UNIT
MHz
MHz
%/°C
%/V
PARAMETER
TEST CONDITIONS
MIN
NOM MAX
C_XIN
C_XOUT
V_IL
V_IH
NOTES:
XTS=0; LF oscillator selected, V_CC = 2.2 V/3 V
12
Integrated input capacitance
XTS=1; XT1 oscillator selected, V_CC = 2.2 V/3 V
2
XTS=0; LF oscillator selected, V_CC = 2.2 V/3 V
12
Integrated output capacitance
XTS=1; XT1 oscillator selected, V_CC = 2.2 V/3 V
2
Input levels at XIN
V_CC = 2.2 V/3 V
(see Note 2)
XTS = 0 or 1
XT1 or LF modes
XTS = 0, LF mode
V_SS
0.9 × V_CC
0.2 × V_CC
V_CC
XTS = 1, XT1 mode
0.8 × V_CC
V_CC
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.
UNIT
pF
pF
V
crystal oscillator, XT2 oscillator (see Note 1)
PARAMETER
TEST CONDITIONS
MIN
NOM MAX
C_XIN
C_XOUT
V_IL
V_IH
NOTES:
Integrated input capacitance
V_CC = 2.2 V/3 V
2
Integrated output capacitance
V_CC = 2.2 V/3 V
2
Input levels at XIN
V_CC = 2.2 V/3 V (see Note 2)
V_SS
0.8 × V_CC
0.2 × V_CC
V_CC
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.
UNIT
pF
pF
V
V
USART0, USART1 (see Note 1)
PARAMETER
TEST CONDITIONS
MIN
NOM MAX
UNIT
t_(τ)
USART0/USART1: deglitch time
V_CC = 2.2 V
V_CC = 3 V
200
430 800
ns
150
280 500
NOTE 1:
The signal applied to the USART0/USART1 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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
37