em78p257 ELAN Microelectronics Corp, em78p257 Datasheet - Page 80

• Manufacturer Part Number: em78p257
• Description: 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

Fig. 41 Internal RC 1M and 4MHz OSC Frequency vs. Temperature Join Process Drifts, VDD=5V
Fig. 42 Internal RC 32K and 455KHz OSC Frequency vs. Temperature Join Process Drifts VDD=5V
This specification is subject to change without prior notice.
Four conditions exist with the Operating Current ICC1 to ICC4. These conditions are as follows :
ICC1: VDD=3V, Fosc=32K Hz, 2 clocks, WDT disable
700
600
500
400
300
200
100
6
5
4
3
2
1
0
0
0
0
IRC 32K and 455KHz OSC Frequency (VDD=5V)
I R C 1 M a n d 4 M H z O S C F r e q u e n c y ( V D D = 5 V )
10
10
20
20
OSC = 4MHz
OSC = 1MHz
OSC = 455KHz
OSC = 32KHz
Temperature (¢J)
Temperature (¢J)
30
30
80
40
40
50
50
60
60
EM78P257
70
70
OTP ROM
06.27.2003(V1.2)