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| 型號(hào)： | SAF-C517A-4R24M |
| 廠商： | SIEMENS A G |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-Bit CMOS Microcontroller |
| 中文描述： | 8-BIT, MROM, 24 MHz, MICROCONTROLLER, PQFP100 |
| 文件頁數(shù)： | 12/67頁 |
| 文件大小： | 479K |
| 代理商： | SAF-C517A-4R24M |
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C517A
Semiconductor Group
12
1997-10-01
P3.0 - P3.7
90 - 97
90
91
92
93
94
95
96
97
I/O
Port 3
is an 8-bit quasi-bidirectional I/O port with internal pullup
resistors. Port 3 pins that have 1's written to them are
pulled high by the internal pullup resistors, and in that state
can be used as inputs. As inputs, port 3 pins being
externally pulled low will source current (
I
IL
, in the DC
characteristics) because of the internal pullup resistors.
Port 3 also contains the interrupt, timer, serial port and
external memory strobe pins that are used by various
options. The output latch corresponding to a secondary
function must be programmed to a one (1) for that function
to operate. The secondary functions are assigned to the
pins of port 3, as follows:
P3.0
RxD0
Receiver data input (asynch.) or data
input/output (synch.)of serial interface 0
P3.1
TxD0
Transmitter data output (asynch.) or
clock output (synch.) of serial interface 0
P3.2
INT0
External interrupt 0 input /
timer 0 gate control input
P3.3
INT1
External interrupt 1 input /
timer 1 gate control input
P3.4
T0
Timer 0 counter input
P3.5
T1
Timer 1 counter input
P3.6
WR
WR control output; latches the data byte
from port 0 into the external data
memory
P3.7
RD
RD control output; enables the external
data memory
N.C.
2 - 5, 25,
28, 29, 32,
43, 44,
51 - 53,
74 - 77
88, 89
–
Not connected
These pins of the P-MQFP-100 package need not be
connected.
*) I = Input
O = Output
Table 2
Pin Definitions and Functions (cont’d)
Symbol
Pin Number
I/O*)
Function
P-MQFP-100
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAB-C517A | 8-bit CMOS MICROCONTROLLER |
| SAF-C517A-LN | 8-bit CMOS MICROCONTROLLER |
| SAH-C517A | 8-bit CMOS MICROCONTROLLER |
| SAF-C517A | 8-bit CMOS MICROCONTROLLER |
| SAF-C517A-L | 8 BIT CMOS MICROCONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAF-C517A-4RM | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAF-C517A-L | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8 BIT CMOS MICROCONTROLLER |
| SAF-C517A-LM | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAF-C517A-LN | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-bit CMOS MICROCONTROLLER |
| SAFC517ALNTR | 制造商:Infineon Technologies AG 功能描述:MCU 8-bit C500 8051 CISC ROMLess 5V 84-Pin PLCC T/R |
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