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ST7261 数据表(PDF) 53 Page - STMicroelectronics

部件名 ST7261
功能描述  LOW SPEED USB 8-BIT MCU WITH 3 ENDPOINTS, ROM MEMORY, LVD, WDG, TIMER
PDF  80 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST7261 数据表(HTML) 53 Page - STMicroelectronics

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11.4 SUPPLY CURRENT CHARACTERISTICS
The following current consumption specified for
the ST7 functional operating modes over tempera-
ture range does not take into account the clock
source current consumption. To get the total de-
vice consumption, the two current values must be
added (except for HALT mode for which the clock
is stopped).
Note 1:
Typical data are based on TA=25°C and not tested in production
Note 2:
Data based on design simulation, not tested in production.
Note 3:
USB Transceiver is powered down.
Note 4:
Low voltage reset function enabled.
CPU in HALT mode.
Current consumption of external pull-up (1.5Kohms to USBVCC) and pull-down (15Kohms to VSSA)
not included.
Figure 31. Typ. IDD in RUN at 4 and 8 MHz fCPU
Figure 32. Typ. IDD in WAIT at 4 and 8 MHz fCPU
Symbol
Parameter
Conditions
Typ 1)
Max
Unit
∆I
DD(
∆Ta) Supply current variation vs. temperature Constant VDD and fCPU
10
%
IDD
CPU RUN mode
I/Os in input mode.
USB transceiver and
LVD disabled
fCPU = 4 MHz
4
6
mA
fCPU = 8 MHz
6
12
LVD enabled. USB in
Transmission2)
fCPU = 4 MHz
10
14
mA
fCPU = 8 MHz
12
20
mA
CPU WAIT mode2)
I/Os in input mode.
USB transceiver and
LVD disabled
fCPU = 8 MHz
4.5
8
mA
LVD enabled. USB in
Transmission
fCPU = 8 MHz
11
18
mA
CPU HALT mode3)
with LVD4)
130
200
µA
without LVD
30
50
USB Suspend mode4)
130
200
µA
1
2
3
4
5
6
7
8
3
3.5
4
4.5
5
5.5
6
Vdd (V)
Idd run at fcpu=8MHz
Idd run at fcpu=4MHz
0
1
2
3
4
5
6
34
56
Vdd (V)
Idd wait at fcpu=4MHz
Idd wait at fcpu=8MHz



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