NXP Semiconductors P89LPC9321 UM10310 User Manual

NXP Semiconductors Hardware

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UM10310

P89LPC9321 User manual

Rev. 2 — 1 November 2010

User manual

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P89LPC9321

Abstract

Technical information for the P89LPC9321 device

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Table of contents

Document Outline

1. Introduction
- 1.1 Pin configuration
- 1.2 Pin description
- 1.3 Functional diagram
- 1.4 Block diagram
- 1.5 Special function registers
- 1.6 Memory organization
2. Clocks
- 2.1 Enhanced CPU
- 2.2 Clock definitions
  - 2.2.1 Oscillator Clock (OSCCLK)
- 2.3 External crystal oscillator option
- 2.4 Clock output
- 2.5 On-chip RC oscillator option
- 2.6 Watchdog oscillator option
- 2.7 External clock input option
- 2.8 Clock sources switch on the fly
- 2.9 Oscillator Clock (OSCCLK) wake-up delay
- 2.10 CPU Clock (CCLK) modification: DIVM register
- 2.11 Low power select
3. Interrupts
- 3.1 Interrupt priority structure
- 3.2 External Interrupt pin glitch suppression
4. I/O ports
- 4.1 Port configurations
- 4.2 Quasi-bidirectional output configuration
- 4.3 Open drain output configuration
- 4.4 Input-only configuration
- 4.5 Push-pull output configuration
- 4.6 Port 0 and Analog Comparator functions
- 4.7 Additional port features
5. Power monitoring functions
- 5.1 Brownout detection
- 5.2 Power-on detection
- 5.3 Power reduction modes
6. Reset
- 6.1 Reset vector
7. Timers 0 and 1
- 7.1 Mode 0
- 7.2 Mode 1
- 7.3 Mode 2
- 7.4 Mode 3
- 7.5 Mode 6
- 7.6 Timer overflow toggle output
8. Real-time clock system timer
- 8.1 Real-time clock source
- 8.2 Changing RTCS1/RTCS0
- 8.3 Real-time clock interrupt/wake-up
  - 8.3.1 Real-time clock read back
- 8.4 Reset sources affecting the Real-time clock
9. Capture/Compare Unit (CCU)
- 9.1 CCU Clock (CCUCLK)
- 9.2 CCU Clock prescaling
- 9.3 Basic timer operation
- 9.4 Output compare
- 9.5 Input capture
- 9.6 PWM operation
- 9.7 Alternating output mode
- 9.8 Synchronized PWM register update
- 9.9 HALT
- 9.10 PLL operation
- 9.11 CCU interrupt structure
10. UART
- 10.1 Mode 0
- 10.2 Mode 1
- 10.3 Mode 2
- 10.4 Mode 3
- 10.5 SFR space
- 10.6 Baud Rate generator and selection
- 10.7 Updating the BRGR1 and BRGR0 SFRs
- 10.8 Framing error
- 10.9 Break detect
- 10.10 More about UART Mode 0
- 10.11 More about UART Mode 1
- 10.12 More about UART Modes 2 and 3
- 10.13 Framing error and RI in Modes 2 and 3 with SM2 = 1
- 10.14 Break detect
- 10.15 Double buffering
- 10.16 Double buffering in different modes
- 10.17 Transmit interrupts with double buffering enabled (Modes 1, 2, and 3)
- 10.18 The 9th bit (bit 8) in double buffering (Modes 1, 2, and 3)
- 10.19 Multiprocessor communications
- 10.20 Automatic address recognition
11. I2C interface
- 11.1 I2C data register
- 11.2 I2C slave address register
- 11.3 I2C control register
- 11.4 I2C Status register
- 11.5 I2C SCL duty cycle registers I2SCLH and I2SCLL
- 11.6 I2C operation modes
12. Serial Peripheral Interface (SPI)
- 12.1 Configuring the SPI
- 12.2 Additional considerations for a slave
- 12.3 Additional considerations for a master
- 12.4 Mode change on SS
- 12.5 Write collision
- 12.6 Data mode
- 12.7 SPI clock prescaler select
13. Analog comparators
- 13.1 Comparator configuration
- 13.2 Internal reference voltage
- 13.3 Comparator input pins
- 13.4 Comparator interrupt
- 13.5 Comparators and power reduction modes
- 13.6 Comparators configuration example
- 13.7 Programmable Gain Amplifier (PGA)
14. Keypad interrupt (KBI)
15. Watchdog timer (WDT)
- 15.1 Watchdog function
- 15.2 Feed sequence
- 15.3 Watchdog clock source
- 15.4 Watchdog Timer in Timer mode
- 15.5 Power-down operation
- 15.6 Periodic wake-up from power-down without an external oscillator
16. Additional features
- 16.1 Software reset
- 16.2 Dual Data Pointers
17. Data EEPROM
- 17.1 Data EEPROM read
- 17.2 Data EEPROM write
- 17.3 Hardware reset
- 17.4 Multiple writes to the DEEDAT register
- 17.5 Sequences of writes to DEECON and DEEDAT registers
- 17.6 Data EEPROM Row Fill
- 17.7 Data EEPROM Block Fill
18. Flash memory
- 18.1 General description
- 18.2 Features
- 18.3 Flash programming and erase
- 18.4 Using Flash as data storage: IAP-Lite
- 18.5 In-circuit programming (ICP)
- 18.6 ISP and IAP capabilities of the P89LPC9321
- 18.7 Boot ROM
- 18.8 Power on reset code execution
- 18.9 Hardware activation of Boot Loader
- 18.10 In-system programming (ISP)
- 18.11 Using the In-system programming (ISP)
- 18.12 In-application programming (IAP)
- 18.13 IAP authorization key
- 18.14 Flash write enable
- 18.15 Configuration byte protection
- 18.16 IAP error status
- 18.17 User configuration bytes
- 18.18 User security bytes
- 18.19 Boot Vector register
- 18.20 Boot status register
19. Instruction set
20. Legal information
- 20.1 Definitions
- 20.2 Disclaimers
- 20.3 Trademarks
21. Tables
22. Figures
23. Contents

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