P89LPC938 NXP Semiconductors, P89LPC938 Datasheet - Page 68

• Manufacturer Part Number: P89LPC938
• Description: The P89LPC938 is a single-chip microcontroller, available in low cost packages, based ona high performance processor architecture that executes instructions in two to four clocks,six times the rate of standard 80C51 devices
• Manufacturer: NXP Semiconductors

Philips Semiconductors
20. Contents
1
2
2.1
2.2
3
3.1
4
5
6
6.1
6.2
7
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
7.11
7.12
7.13
7.14
7.15
7.16
7.17
7.18
7.19
7.20
7.21
7.22
7.23
7.24
7.25
7.26
7.27
7.28
7.29
7.30
8
8.1
8.2
8.3
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ordering information . . . . . . . . . . . . . . . . . . . . . 3
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Functional diagram . . . . . . . . . . . . . . . . . . . . . . 5
Pinning information . . . . . . . . . . . . . . . . . . . . . . 6
Functional description . . . . . . . . . . . . . . . . . . 11
A/D converter . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Principal features . . . . . . . . . . . . . . . . . . . . . . . 1
Additional features . . . . . . . . . . . . . . . . . . . . . . 2
Ordering options . . . . . . . . . . . . . . . . . . . . . . . . 3
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 7
Special function registers . . . . . . . . . . . . . . . . 11
Enhanced CPU . . . . . . . . . . . . . . . . . . . . . . . . 19
Clocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
On-chip RC oscillator option . . . . . . . . . . . . . . 20
Watchdog oscillator option . . . . . . . . . . . . . . . 20
External clock input option . . . . . . . . . . . . . . . 20
CCLK wake-up delay . . . . . . . . . . . . . . . . . . . 21
CCLK modification: DIVM register . . . . . . . . . 21
Low power select . . . . . . . . . . . . . . . . . . . . . . 21
Memory organization . . . . . . . . . . . . . . . . . . . 21
Data RAM arrangement . . . . . . . . . . . . . . . . . 22
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
I/O ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Power monitoring functions. . . . . . . . . . . . . . . 25
Power reduction modes . . . . . . . . . . . . . . . . . 26
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Timers/counters 0 and 1 . . . . . . . . . . . . . . . . . 28
RTC/system timer . . . . . . . . . . . . . . . . . . . . . . 28
CCU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
UART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
I
SPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Analog comparators . . . . . . . . . . . . . . . . . . . . 40
KBI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Watchdog timer. . . . . . . . . . . . . . . . . . . . . . . . 42
Additional features . . . . . . . . . . . . . . . . . . . . . 42
Data EEPROM . . . . . . . . . . . . . . . . . . . . . . . . 43
Flash program memory. . . . . . . . . . . . . . . . . . 43
User configuration bytes . . . . . . . . . . . . . . . . . 46
User sector security bytes . . . . . . . . . . . . . . . 46
General description. . . . . . . . . . . . . . . . . . . . . 46
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . 47
2
C-bus serial interface . . . . . . . . . . . . . . . . . . 35
8.4
8.5
8.6
8.7
8.8
9
10
11
11.1
11.2
12
12.1
12.2
13
14
15
16
17
18
19
© Koninklijke Philips Electronics N.V. 2005
All rights are reserved. Reproduction in whole or in part is prohibited without the prior
written consent of the copyright owner. The information presented in this document does
not form part of any quotation or contract, is believed to be accurate and reliable and may
be changed without notice. No liability will be accepted by the publisher for any
consequence of its use. Publication thereof does not convey nor imply any license under
patent- or other industrial or intellectual property rights.
Published in the Netherlands
8-bit microcontroller with 10-bit A/D converter
Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 50
Static characteristics . . . . . . . . . . . . . . . . . . . 51
Dynamic characteristics . . . . . . . . . . . . . . . . . 53
Other characteristics . . . . . . . . . . . . . . . . . . . 60
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 62
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 65
Revision history . . . . . . . . . . . . . . . . . . . . . . . 66
Data sheet status. . . . . . . . . . . . . . . . . . . . . . . 67
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Contact information . . . . . . . . . . . . . . . . . . . . 67
A/D operating modes . . . . . . . . . . . . . . . . . . . 47
Conversion start modes . . . . . . . . . . . . . . . . . 48
Boundary limits interrupt . . . . . . . . . . . . . . . . 48
Clock divider. . . . . . . . . . . . . . . . . . . . . . . . . . 49
Power-down and Idle mode . . . . . . . . . . . . . . 49
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
ISP entry mode . . . . . . . . . . . . . . . . . . . . . . . 60
Comparator electrical characteristics . . . . . . . 60
A/D converter electrical characteristics . . . . . 61
P89LPC938
Document number: 9397 750 14051
Date of release: 25 February 2005