P89LPC9331_9341_9351_9361 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 5.1 — 20 August 2012 72 of 94
NXP Semiconductors
P89LPC9331/9341/9351/9361
8-bit microcontroller with accelerated two-clock 80C51 core
10.2 Internal RC/watchdog oscillator characteristics
Note: The graphs provided are a statistical summary based on a limited number of
samples and only for information purposes. The performance characteristics listed are not
tested or guaranteed.
Central frequency of internal RC oscillator = 7.3728 MHz
Fig 34. Average internal RC oscillator frequency vs. V
DD
at +25 C
Note: Central frequency of internal RC oscillator = 7.3728 MHz
Fig 35. Average internal RC oscillator frequency vs. V
DD
at 40 C
V
DD
(V)
2.4 3.63.22.8
002aae344
0
−0.1
0.1
0.2
frequency
deviation
(%)
−0.2
V
DD
(V)
2.4 3.63.22.8
002aae346
0
−0.1
0.1
0.2
frequency
deviation
(%)
−0.2