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STR720 数据表(PDF) 45 Page - STMicroelectronics

部件名 STR720
功能描述  ARM720T 16/32-BIT MCU WITH 16K RAM, USB, CAN, 3 TIMERS, ADC, 6 COMMUNICATIONS INTERFACES
PDF  401 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STR720 数据表(HTML) 45 Page - STMicroelectronics

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STR720 - ARCHITECTURE OVERVIEW
45/401
levels. After the reset phase each pin can be reconfigured by software according to the
application requirements.
The input section of P2.13 is implementing a TTL Schmitt Trigger device, while all other ports
are plain input buffer without hysteresis.
Summarizing, hereinafter the reset values of all Port Configuration and Data registers are
reported.
5.19 Dedicated Pins
The status under and after reset of the dedicated ports and pins is hereafter reported.
Table 17. GPIOs Reset configuration
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Port 2
I-TI-T
I-TI-T
I-TI-T
I-TI-T
I-TI-T
I-TI-T
I-T
I-T
I-TI-T
Port 3
I-TI-T
I-TI-T
I-TI-T
I-TI-T
I-TI-T
I-TI-T
I-T
N/A
N/A
N/A
Port 4
I-TI-T
I-TI-T
I-T
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
I-T
Input-Tristate TTL
B-WD
Bidirectional Weak Pull-Down
Table 18. Port registers: Reset configuration
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Port 2
PC02
1
1
1
111
11
11
11
11
11
PC12
0
0
0
000
00
00
00
00
00
PC22
0
0
0
000
00
00
00
00
00
Port 3
PC03
1
1
1
111
11
11
11
1
N/A
N/A
N/A
PC13
0
0
0
000
00
00
00
0
N/A
N/A
N/A
PC23
0
0
0
000
00
00
00
0
N/A
N/A
N/A
Port 4
PC04
11
11
1
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
PC14
00
00
0
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
PC24
00
00
0
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Table 19. Dedicated Pins Reset status
Pin (Note 1)
Status under Reset
Value under Reset
OSCIN
Input
-
OSCOUT
Output
not OSCIN
RSTIN
Input
Z
RTCRST
Input
Z
TCLK
Input
Z
TRST
Input
Z
TMS
Input
Z
1



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