msp430f2121irge Microchip Technology Inc., msp430f2121irge Datasheet - Page 19

• Manufacturer Part Number: msp430f2121irge
• Description: Msp430
• Manufacturer: Microchip Technology Inc.

electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
POR/brownout reset (BOR) (see Notes 1 and 2)
NOTES: 1. The current consumption of the brownout module is already included in the I CC current consumption data. The voltage level V (B_IT−)
V CC(start)
V (B_IT−)
V hys(B_IT−)
V hys(B_IT−)
t d(BOR)
t (reset)
2. During power up, the CPU begins code execution following a period of t d(BOR) after V CC = V (B_IT−) + V hys(B_IT−) . The default
+ V hys(B_IT−) is ≤ 1.8V.
DCO settings must not be changed until V CC ≥ V CC(min) , where V CC(min) is the minimum supply voltage for the desired
operating frequency.
(see Figure 8)
(see Figure 8 through Figure 10)
(see Figure 8)
(see Figure 8)
(see Figure 8)
Pulse length needed at RST/NMI
pin to accepted reset internally
V CC(start)
PARAMETER
V (B_IT−)
V CC
1
0
V hys(B_IT−)
Figure 8. POR/Brownout Reset (BOR) vs Supply Voltage
POST OFFICE BOX 655303
dV CC /dt ≤ 3 V/s
dV CC /dt ≤ 3 V/s
dV CC /dt ≤ 3 V/s
dV CC /dt ≤ 3 V/s
TEST CONDITIONS
t d(BOR)
•
DALLAS, TEXAS 75265
-40−85°C
105°C
MIXED SIGNAL MICROCONTROLLER
T A
SLAS439C − SEPTEMBER 2004 − REVISED JULY 2006
2.2 V/3 V
VCC
MIN
70
70
2
0.7 × V (B_IT−)
TYP
130
130
MSP430x21x1
MAX
2000
1.71
180
210
UNIT
mV
mV
µs
µs
V
V
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