LPC2921_10 Datasheet, PDF (84/84 Pages) NXP Semiconductors – ARM9 microcontroller with CAN, LIN, and USB

NXP Semiconductors
LPC2921/2923/2925
ARM9 microcontroller with CAN, LIN, and USB
6.15
6.15.1
6.15.2
6.15.2.1
6.15.2.2
6.15.2.3
6.15.3
6.15.3.1
6.15.4
6.15.4.1
6.15.4.2
6.15.5
6.15.5.1
6.16
6.16.1
6.16.2
Power, Clock, and Reset control SubSystem
(PCRSS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Clock description . . . . . . . . . . . . . . . . . . . . . . 41
Clock Generation Unit (CGU0) . . . . . . . . . . . . 42
Functional description. . . . . . . . . . . . . . . . . . . 42
PLL functional description . . . . . . . . . . . . . . . 45
Pin description . . . . . . . . . . . . . . . . . . . . . . . . 46
Clock generation for USB (CGU1) . . . . . . . . . 47
Pin description . . . . . . . . . . . . . . . . . . . . . . . . 47
Reset Generation Unit (RGU). . . . . . . . . . . . . 47
Functional description. . . . . . . . . . . . . . . . . . . 48
Pin description . . . . . . . . . . . . . . . . . . . . . . . . 48
Power Management Unit (PMU). . . . . . . . . . . 49
Functional description. . . . . . . . . . . . . . . . . . . 49
Vectored interrupt controller . . . . . . . . . . . . . . 51
Functional description. . . . . . . . . . . . . . . . . . . 51
Clock description . . . . . . . . . . . . . . . . . . . . . . 52
16.1
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 81
16.2
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
16.3
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 81
16.4
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 82
17
Contact information . . . . . . . . . . . . . . . . . . . . 82
18
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
7
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 53
8
Static characteristics. . . . . . . . . . . . . . . . . . . . 55
8.1
Power consumption . . . . . . . . . . . . . . . . . . . . 60
8.2
Electrical pin characteristics . . . . . . . . . . . . . . 61
9
Dynamic characteristics . . . . . . . . . . . . . . . . . 64
9.1
Dynamic characteristics: I/O and CLK_OUT
pins, internal clock, oscillators, PLL, and
CAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
9.2
USB interface . . . . . . . . . . . . . . . . . . . . . . . . . 66
9.3
Dynamic characteristics: I²C-bus interface. . . 67
9.4
Dynamic characteristics: SPI . . . . . . . . . . . . . 68
9.5
Dynamic characteristics: flash memory and
EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
9.6
Dynamic characteristics: ADC1/2 . . . . . . . . . 70
10
Application information. . . . . . . . . . . . . . . . . . 70
10.1
Operating frequency selection . . . . . . . . . . . . 70
10.2
Suggested USB interface solutions . . . . . . . . 71
10.3
SPI signal forms . . . . . . . . . . . . . . . . . . . . . . . 72
10.4
XIN_OSC input . . . . . . . . . . . . . . . . . . . . . . . . 74
10.5
XIN_OSC Printed Circuit Board (PCB)
layout guidelines . . . . . . . . . . . . . . . . . . . . . . . 74
11
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 75
12
Soldering of SMD packages . . . . . . . . . . . . . . 76
12.1
Introduction to soldering . . . . . . . . . . . . . . . . . 76
12.2
Wave and reflow soldering . . . . . . . . . . . . . . . 76
12.3
Wave soldering . . . . . . . . . . . . . . . . . . . . . . . . 76
12.4
Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 77
13
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 79
14
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
15
Revision history . . . . . . . . . . . . . . . . . . . . . . . . 80
16
Legal information. . . . . . . . . . . . . . . . . . . . . . . 81
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP B.V. 2010.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [e-mail]
Date of release: 14 April 2010
Document identifier: LPC2921_23_25_3