SAF-C515-1R24M Siemens Semiconductor Group, SAF-C515-1R24M Datasheet - Page 16

• Manufacturer Part Number: SAF-C515-1R24M
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: Siemens Semiconductor Group

C515
Reset and System Clock
The reset input is an active low input at pin RESET. Since the reset is synchronized internally, the
RESET pin must be held low for at least two machine cycles (24 oscillator periods) while the
V
oscillator is running. A pullup resistor is internally connected to
to allow a power-up reset with
CC
V
an external capacitor only. An automatic reset can be obtained when
is applied by connecting
CC
the RESET pin to
V
via a capacitor. Figure 6 shows the possible reset circuitries.
SS
a)
b)
&
RESET
RESET
+
C515
C515
c)
RESET
+
C515
MCS03203
Figure 6
Reset Circuitries
Semiconductor Group
16
1997-08-01