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參數(shù)資料
| 型號： | SAB80C517A-N18 |
| 廠商： | SIEMENS A G |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-Bit CMOS Single-Chip Microcontroller |
| 中文描述： | 8-BIT, 18 MHz, MICROCONTROLLER, PQCC84 |
| 文件頁數(shù)： | 8/77頁 |
| 文件大?。?/td> | 1358K |
| 代理商： | SAB80C517A-N18 |
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SAB 80C517A/83C517A-5
Semiconductor Group
7
1994-05-01
Pin Definitions and Functions
Symbol
Pin Number
I/O
*)
Function
P-LCC-84
P-MQFP-100-2
P4.0 – P4.7 1– 3, 5 – 9
64 - 66,
68 - 72
I/O
Port 4
is a bidirectional I/O port with internal
pull-up resistors. Port 4 pins that have 1
s written to them are pulled high by the
internal pull-up resistors, and in that
state can be used as inputs. As inputs,
port 4 pins being externally pulled low
will source current (
acteristics) because of the internal pull-
up resistors.
This port also serves alternate compare
functions. The secondary functions are
assigned to the pins of port 4 as follows:
– CM0 (P4.0): Compare Channel 0
– CM1 (P4.1): Compare Channel 1
– CM2 (P4.2): Compare Channel 2
– CM3 (P4.3): Compare Channel 3
– CM4 (P4.4): Compare Channel 4
– CM5 (P4.5): Compare Channel 5
– CM6 (P4.6): Compare Channel 6
– CM7 (P4.7): Compare Channel 7
I
IL,
in the DC char-
PE/SWD
4
67
I
Power saving modes enable Start
Watchdog Timer
A low level on this pin allows the soft-
ware to enter the power down, idle and
slow down mode. In case the low level
is also seen during reset, the watchdog
timer function is off on default.
Use of the software controlled power
saving modes is blocked, when this pin
is held on high level. A high level during
reset performs an automatic start of the
watchdog timer immediately after reset.
When left unconnected this pin is pulled
high by a weak internal pull-up resistor.
*
I = Input
O = Output
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