參數(shù)資料
型號(hào)： M44C890-H
廠商： TEMIC SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： Low-Current Microcontroller for Wireless Communication
中文描述： 4-BIT, EEPROM, MICROCONTROLLER, PDSO20
封裝： SSO-20
文件頁(yè)數(shù)： 14/63頁(yè)
文件大?。?/td> 503K
代理商： M44C890-H
M44C890
M44C090
Rev.A4, 14-Dec-01
14 (63)
2.4.1
Voltage Monitor Control / Status Register
Primary register address:
’
F
’
hex
VM0
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áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
VM2: V
oltage monitor
M
ode bit 2
VM1: V
oltage monitor
M
ode bit 1
VM0: V
oltage monitor
M
ode bit 0
0
1
0
0
ááááááááááááááááááááááá
ááááááááá
0
1
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
Internal (supply voltage), middle threshold (2.6 V), interrupt with negative slope
Internal (supply voltage), low threshold (2.2 V), interrupt with negative slope
áááááááááááááááááááááááááááááááá
áááááááááááááááááááááááááááááááá
VIM V
oltage
I
nterrupt
M
ask
bit
VIM = 0, voltage monitor interrupt is enabled
VIM = 1, voltage monitor interrupt is disabled
VMS V
oltage
M
onitor
S
tatus
bit
VMS = 0, the voltage at the comparator input is below Vref
VMS = 1, the voltage at the comparator input is above Vref
Low threshold
Middle threshold
High threshold
VDD
VMS = 1
Low threshold
Middle threshold
High threshold
VMS = 0
3.0 V
2.6 V
2.2 V
13755
Figure 12. Internal supply voltage supervisor
1.3 V
VMI
VMS = 1
VMS = 0
Positive slope
Negative slope
VMS = 1
VMS = 0
Interrupt negative slope
Interrupt positive slope
Internal reference level
t
13756
Figure 13. External input voltage supervisor
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