参数资料
型号: C515C
厂商: SIEMENS AG
元件分类: 8位微控制器
英文描述: 8-Bit CMOS Microcontroller
中文描述: 8位CMOS微控制器
文件页数: 10/96页
文件大小: 1285K
代理商: C515C
C515C
Data Sheet
6
2003-02
Table 2
Symbol
Pin Definitions and Functions
Pin Number
I/O
1)
Function
P-MQFP-80-1
1
I
RESET
RESET
A low level on this pin for the duration of two
machine cycles while the oscillator is running resets
the C515C. A small internal pullup resistor permits
power-on reset using only a capacitor connected to
V
SS
.
Reference voltage
for the A/D converter
Reference ground
for the A/D converter
Port 6
is an 8-bit unidirectional input port to the
A/D converter. Port pins can be used for digital
input, if voltage levels simultaneously meet the
specifications high/low input voltages and for the
eight multiplexed analog inputs.
Port 7
is an 1-bit quasi-bidirectional I/O port with internal
pull-up resistor. When a 1 is written to P7.0 it is
pulled high by an internal pull-up resistor, and in that
state can be used as input. As input, P7.0 being
externally pulled low will source current (
I
IL
, in the
DC characteristics) because of the internal pull-up
resistor. If P7.0 is used as interrupt input, its output
latch must be programmed to a one (1). The
secondary function is assigned to the port 7 pin as
follows:
P7.0 INT7, Interrupt 7 input
V
AREF
V
AGND
P6.0-P6.7
3
4
12-5
I
P7.0 / INT7 23
I/O
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