MSP430F677X_16 Datasheet, PDF (79/162 Pages) Texas Instruments – Polyphase Metering SoCs

ECCN 5E002 TSPA - Technology / Software Publicly Available
MSP430F677x, MSP430F676x, MSP430F674x
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SLAS768D – SEPTEMBER 2012 – REVISED DECEMBER 2013
eUSCI (I2C Mode)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 17)
f_eUSCI
PARAMETER
eUSCI input clock frequency
TEST CONDITIONS
Internal: SMCLK, ACLK
External: UCLK
Duty cycle = 50% ± 10%
V_CC
MIN TYP MAX UNIT
f_SYSTEM MHz
f_SCL
t_HD,STA
t_SU,STA
t_HD,DAT
t_SU,DAT
t_SU,STO
SCL clock frequency
Hold time (repeated) START
Setup time for a repeated START
Data hold time
Data setup time
Setup time for STOP
f_SCL = 100 kHz
f_SCL > 100 kHz
f_SCL = 100 kHz
f_SCL > 100 kHz
f_SCL = 100 kHz
f_SCL > 100 kHz
f_SCL = 100 kHz
f_SCL > 100 kHz
UCGLITx = 0
2 V, 3 V
0
5.1
2 V, 3 V
1.5
5.1
2 V, 3 V
1.4
2 V, 3 V
0.4
5.0
2 V, 3 V
1.3
5.2
2 V, 3 V
1.7
75
400 kHz
µs
µs
µs
µs
µs
220 ns
t_SP
Pulse duration of spikes suppressed by input ^{UCGLITx = 1}
filter
UCGLITx = 2
35
2 V, 3 V
30
120 ns
60 ns
UCGLITx = 3
20
35 ns
UCCLTOx = 1
30
ms
t_TIMEOUT Clock low timeout
UCCLTOx = 2
UCCLTOx = 3
2 V, 3 V
33
ms
37
ms
SDA
t_HD,STA
t_SU,STA
t_HD,STA
t_BUF
t_LOW
t_HIGH
t_SP
SCL
t_HD,DAT
t_SU,DAT
Figure 17. I2C Mode Timing
t_SU,STO
Schmitt-Trigger Inputs – RTC Tamper Detect Pin
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
AUXVCC3 MIN TYP
V_IT+ Positive-going input threshold voltage
1.8 V
0.80
3V
1.50
V_IT– Negative-going input threshold voltage
1.8 V
0.45
3V
0.75
V_hys Input voltage hysteresis (V_IT+ – V_IT–)
1.8 V
0.3
3V
0.4
R_Pull Pullup or pulldown resistor
For pullup: V_IN = V_SS
For pulldown: V_IN =
AUXVCC3
20
35
C_I
Input capacitance
V_IN = V_SS or AUXVCC3
5
MAX
1.40
2.10
1.00
1.65
0.85
1.0
UNIT
V
V
V
50 kΩ
pF
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