SAB80C517-M16 SIEMENS [Siemens Semiconductor Group], SAB80C517-M16 Datasheet - Page 269
![no-image](/images/no-image-200.jpg)
SAB80C517-M16
Manufacturer Part Number
SAB80C517-M16
Description
8-Bit CMOS Single-Chip Microcontroller
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.SAB80C517-M16.pdf
(323 pages)
- Current page: 269 of 323
- Download datasheet (4Mb)
Pin Definitions and Functions
Symbol
P4.0 – P4.7 1– 3, 5 – 9
PE/SWD
*
Semiconductor Group
I = Input
O = Output
P-LCC-84
4
Pin Number
P-MQFP-100-2
64 - 66,
68 - 72
67
270
I/O
I/O
I
*)
Function
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 (I
characteristics) 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
Power saving modes enable/
Start Watchdog Timer
A low level on this pin allows the
software 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.
SAB 80C517/80C537
IL,
in the DC
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