Datasheet

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SLAS491A − AUGUST 2005 − REVISED OCTOBER 2005
21
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
active mode supply current (into V
CC
) excluding external current (see Notes 1 and 2)
PARAMETER TEST CONDITIONS VCC MIN TYP MAX UNIT
I
AM, 1MHz
Active mode (AM)
f
DCO
= f
MCLK
= f
SMCLK
= 1MHz, f
ACLK
= 32,768Hz
,
Program executes in flash,
BCSCTL1 = CALBC1_1MHz,
2.2 V 220 270
µA
I
AM, 1MHz
Active mode (AM)
current (1MHz)
BCSCTL1 = CALBC1_1MHz,
DCOCTL = CALDCO_1MHz,
CPUOFF = 0, SCG0 = 0, SCG1 = 0, OSCOFF = 0
3 V 300 370
µ
A
I
AM, 1MHz
Active mode (AM)
f
DCO
= f
MCLK
= f
SMCLK
= 1MHz, f
ACLK
= 32,768Hz
,
Program executes in RAM,
BCSCTL1 = CALBC1_1MHz,
2.2 V 190
µA
I
AM, 1MHz
Active mode (AM)
current (1MHz)
BCSCTL1 = CALBC1_1MHz,
DCOCTL = CALDCO_1MHz,
CPUOFF = 0, SCG0 = 0, SCG1 = 0, OSCOFF = 0
3 V 260
µ
A
I
AM, 4kHz
Active mode (AM)
f
MCLK
= f
SMCLK
= f
ACLK
= 32,768Hz/8 = 4,096Hz,
f
DCO
= 0Hz,
Program executes in flash,
2.2 V 1.2 3
µA
I
AM, 4kHz
Active mode (AM)
current (4kHz)
DCO
Program executes in flash,
SELMx = 11, SELS = 1, DIVMx = DIVSx = DIVAx = 11
,
CPUOFF = 0, SCG0 = 1, SCG1 = 0, OSCOFF = 0
3 V 1.6 4
µ
A
I
AM,100kHz
Active mode (AM)
f
MCLK
= f
SMCLK
= f
DCO(0, 0)
≈ 100kHz, f
ACLK
= 0Hz
,
Program executes in flash,
2.2 V 37 50
µA
I
AM,100kHz
Active mode (AM)
current (100kHz)
Program executes in flash,
RSELx = 0, DCOx = 0,
CPUOFF = 0, SCG0 = 0, SCG1 = 0, OSCOFF = 1
3 V 40 55
µ
A
NOTES: 1. All inputs are tied to 0 V or V
CC
. Outputs do not source or sink any current.
2. The currents are characterized with a Micro Crystal CC4V−T1A SMD cyrstal with a load capacitance of 9 pF.
The internal and external load capacitance is chosen to closely match the required 9pF.
typical characteristics − active mode supply current (into V
CC
)
0.0
1.0
2.0
3.0
4.0
5.0
1.5 2.0 2.5 3.0 3.5 4.0
V
CC
− Supply Voltage − V
Active Mode Current − mA
Figure 2. Active mode current vs V
CC
, T
A
= 25°C
f
DCO
= 1 MHz
f
DCO
= 8 MHz
f
DCO
= 12 MHz
f
DCO
= 16 MHz
0.0
1.0
2.0
3.0
4.0
0.0 4.0 8.0 12.0 16.0
f
DCO
− DCO Frequency − MHz
Active Mode Current − mA
Figure 3. Active mode current vs DCO frequency
T
A
= 25 °C
T
A
= 85 °C
V
CC
= 2.2 V
V
CC
= 3 V
T
A
= 25 °C
T
A
= 85 °C