Datasheet

C515C
Data Sheet 12 2003-02
PE
/SWD 75 I Power saving mode 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.
V
SSCLK
13 – Ground (0 V) for on-chip oscillator
This pin is used for ground connection of the on-chip
oscillator circuit.
V
DDCLK
14 – Supply voltage for on-chip oscillator
This pin is used for power supply of the on-chip
oscillator circuit.
V
DDE1
V
DDE2
32
68
– Supply voltage for I/O ports
These pins are used for power supply of the I/O
ports during normal, idle, and power down mode.
V
SSE1
V
SSE2
35
70
– Ground (0 V) for I/O ports
These pins are used for ground connections of the
I/O ports during normal, idle, and power down
mode.
V
DD1
33 – Supply voltage for internal logic
This pins is used for the power supply of the internal
logic circuits during normal, idle, and power down
mode.
V
SS1
34 – Ground (0 V) for internal logic
This pin is used for the ground connection of the
internal logic circuits during normal, idle, and power
down mode.
Table 2 Pin Definitions and Functions (cont’d)
Symbol Pin Number I/O
1)
Function
P-MQFP-80-1