參數(shù)資料
型號(hào): MSP430F439IPN
廠(chǎng)商: TEXAS INSTRUMENTS INC
元件分類(lèi): 微控制器/微處理器
英文描述: 16-BIT, FLASH, RISC MICROCONTROLLER, PQFP80
封裝: GREEN. PLASTIC, LQFP-80
文件頁(yè)數(shù): 21/67頁(yè)
文件大?。?/td> 1105K
代理商: MSP430F439IPN
MSP430F43x
MIXED SIGNAL MICROCONTROLLER
SLAS713 -- JUNE 2010
28
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted)
POR/brownout reset (BOR) (see Note 1)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
td(BOR)
2000
s
VCC(start)
dVCC/dt ≤ 3 V/s (see Figure 10)
0.7 × V(B_IT--)
V
V(B_IT--)
Brownout
dVCC/dt ≤ 3 V/s (see Figure 10 through Figure 12)
1.71
V
Vhys(B_IT--)
(see Note 2)
dVCC/dt ≤ 3 V/s (see Figure 10)
70
130
180
mV
t(reset)
Pulse length needed at RST/NMI pin to accepted reset internally,
VCC =2.2 V/3V
2
s
NOTES: 1. The current consumption of the brownout module is already included in the ICC current consumption data. The voltage level
V(B_IT--) +Vhys(B_IT--) is ≤ 1.8V.
2. During power up, the CPU begins code execution following a period of td(BOR) after VCC =V(B_IT--) +Vhys(B_IT--). The default
FLL+ settings must not be changed until VCC ≥ VCC(min), where VCC(min) is the minimum supply voltage for the desired
operating frequency. See the MSP430x4xx Family User’s Guide (SLAU056) for more information on the brownout/SVS circuit.
typical characteristics
0
1
t d(BOR)
VCC
V(B_IT--)
Vhys(B_IT--)
VCC(start)
Figure 10. POR/Brownout Reset (BOR) vs Supply Voltage
VCC
3V
tpw
0
0.5
1
1.5
2
0.001
1
1000
Typical Conditions
1ns
tpw -- Pulse Width -- stpw -- Pulse Width -- s
VCC =3V
V
CC(drop)
--
V
VCC(drop)
Figure 11. VCC(drop) Level With a Square Voltage Drop to Generate a POR/Brownout Signal
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