
Philips Semiconductors
Low voltage 8-bit microcontrollers with
UART, I2C-bus and ADC
Product specification
P80CL580; P83CL580
VDD
P80CL580
P83CL580
VDD
to internal
timing circuits
PD
VDD
C1 i
XTAL1
R bias
C2 i
XTAL2
MGC756
Fig.30 Standard oscillator.
handbook6,0h0alfpage
fosc
(kHz)
400
MLA579
200
0
0
2
4 RC (µs) 6
RC oscillator frequency is externally adjustable; 100 kHz ≤ fosc ≤ 500 kHz.
Fig.31 RC oscillator; frequency as a function of RC.
1997 Mar 14
52