參數(shù)資料
型號(hào): C515
廠商: INFINEON TECHNOLOGIES AG
元件分類: 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
文件頁數(shù): 9/55頁
文件大?。?/td> 287K
代理商: C515
Semiconductor Group
9
1997-08-01
C515
P1.0 - P1.7
31-24
31
30
29
28
27
26
25
24
I/O
Port 1
is an 8-bit quasi-bidirectional I/O port with internal pullup
resistors. Port 1 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 1 pins being
externally pulled low will source current (
characteristics) because of the internal pullup resistors.
The port is used for the low-order address byte during
program verification. Port 1 also contains the interrupt,
timer, clock, capture and compare 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 (except when used for the
compare functions). The secondary functions are
assigned to the port 1 pins as follows :
P1.0 / INT3 /CC0
Interrupt 3 input /
compare 0 output /
capture 0 input
P1.1 / INT4 /CC1
Interrupt 4 input /
compare 1 output /
capture 1 input
P1.2 / INT5 /CC2
Interrupt 5 input /
compare 2 output /
capture 2 input
P1.3 / INT6 /CC3
Interrupt 6 input /
compare 3 output /
capture 3 input
P1.4 / INT2
Interrupt 2 input
P1.5 / T2EX
Timer 2 external reload /
trigger input
P1.6 / CLKOUT
System clock output
P1.7 / T2
Counter 2 input
I
IL
, in the DC
V
SS
34
Ground (0 V)
V
CC
33, 69
Supply voltage
during normal, idle, and power-down operation.
*) I = Input
O = Output
Table 1
Pin Definitions and Functions (cont’d)
Symbol
Pin Number
(P-MQFP-80)
I/O*)
Function
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