參數(shù)資料
型號: SAF-C513A-HN
廠商: INFINEON TECHNOLOGIES AG
元件分類: 微控制器/微處理器
英文描述: 8-BIT, EEPROM, 8 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 34/128頁
文件大小: 1837K
代理商: SAF-C513A-HN
Semiconductor Group
1-8
Introduction
P3.0-P3.7
11,
13-19
11
13
14
15
16
17
18
19
5, 7-13
5
7
8
9
10
11
12
13
I/O
Port 3
is a bidirectional I/O port with internal pull-up resistors.
Port 3 pins that have 1s 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
RXD
Receiver data input (asynchronous)
or data input/output (synchronous)
of serial interface (USART) 1)
P3.1
TXD
Transmitter data output (USART) 1)
(asynchronous) or clock output
(synchronous) of serial interface
P3.2
INT0
Interrupt 0 input / timer 0 gate control
P3.3
INT1
Interrupt 1 input / timer 1 gate control
P3.4
T0
Counter 0 input
P3.5
T1
Counter 1 input
P3.6
WR
Write control signal : latches the data
byte from port 0 into the external
data memory
P3.7
RD
Read control signal : enables the
external data memory to port 0
1) not available in the C511/511A
XTAL2
20
14
XTAL2
Output of the inverting oscillator amplifier.
*) I = Input
O = Output
Table 1-2
Pin Definitions and Functions (cont’d)
Symbol
Pin Number
I/O*) Function
P-LCC-
44
P-MQFP-
44
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