参数资料
型号: MSP430FG437IPNR
厂商: TEXAS INSTRUMENTS INC
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 8 MHz, RISC MICROCONTROLLER, PQFP80
封装: GREEN, PLASTIC, QFP-80
文件页数: 21/73页
文件大小: 1121K
代理商: MSP430FG437IPNR
MSP430FG43x
MIXED SIGNAL MICROCONTROLLER
SLAS380C APRIL 2004 REVISED MARCH 2011
28
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
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
μs
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/3 V
2
μs
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
3 V
t pw
0
0.5
1
1.5
2
0.001
1
1000
Typical Conditions
1 ns
tpw Pulse Width μstpw Pulse Width μs
VCC = 3 V
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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