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ST7261 数据表(PDF) 63 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) 63 Page - STMicroelectronics

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I/O PORT PIN CHARACTERISTICS (Cont’d)
11.8.2 Output Driving Current
Subject to general operating condition for VDD, fCPU, and TA unless otherwise specified.
Figure 44. Typ. VOL at VDD=5V (std. port)
Figure 45. Typ. VOL at VDD=5V (high-sink)
Figure 46. Typ. VDD-VOH at VDD=5V (std. port)
Figure 47. Typ. VDD-VOH at VDD=5V (high-sink)
Notes:
1. The IIO current sunk must always respect the absolute maximum rating specified in Section 11.2 and the sum of IIO (I/
O ports and control pins) must not exceed IVSS.
2. The IIO current sourced must always respect the absolute maximum rating specified in Section 11.2 and the sum of IIO
(I/O ports and control pins) must not exceed IVDD. True open drain I/O pins does not have VOH.
Symbol
Parameter
Conditions
Min
Max
Unit
VOL
1)
Output low level voltage for a standard I/O pin
when up to 8 pins are sunk at same time
(see Figure 44)
IIO=+5mA
1.3
V
IIO=+2mA
0.4
Output low level voltage for a high sink I/O pin
when up to4 pins are sunk at same time
(see Figure 45)
IIO=+20mA
1.3
IIO=+8mA
0.4
VOH
2)
Output high level voltage for an I/O pin
when up to 8 pins are sourced at same time
(see Figure 46)
IIO=-5mA
VDD-2.0
IIO=-2mA
VDD-0.8
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
024
68
10
lio(mA)
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
0
5
10
15
lio (mA)
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
-8
-7
-6
-5
-4
-3
-2
-1
0
lio (mA)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
-8
-7
-6
-5
-4
-3
-2
-1
0
lio (mA)



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