C541U_99 Datasheet, PDF (15/192 Pages) Siemens Semiconductor Group – 8-BIT CMOS MICROCONTROLLER

Introduction
C541U
Table 1-1
Pin Definitions and Functions (cont’d)
Symbol
ECAP
Pin I/O*) Function
Numbers
P-LCC-44
2
– External Capacitor
This pin is required to be connected to an external capacitor
which is connected to V_SS. The value of the capacitor is 6 nF.
2
C
C541U
V_DDU
V_DD
1
8, 23
V_SS
9, 22
*) I = Input
O = Output
V_SS
– Supply voltage
for the on-chip USB transceiver circuitry.
– Supply voltage
for ports and internal logic circuitry during normal, idle, and power
down mode.
– Ground (0V)
during normal, idle, and power down mode.
Semiconductor Group
1-8
1997-10-01