Philips UM10109 Philips Semiconductors UM10109

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User manual Rev. 02 — 23 May 2005 101 of 133

Philips Semiconductors UM10109

P89LPC932A1 User manual

The maximum number of tclks is:

(3)

Tabl e 89 shows sample P89LPC932A1 timeout values.

tclks 2 57+()

()255 1+()1 1048577=+=

Table 87: Watchdog Timer Control register (WDCON - address A7h) bit allocation

Bit 76543210

Symbol PRE2 PRE1 PRE0 - - WDRUN WDTOF WDCLK

Reset111xx11/01

Table 88: Watchdog Timer Control register (WDCON - address A7h) bit description

Bit Symbol Description

0 WDCLK Watchdog input clock select. When set, the watchdog oscillator is selected. When cleared, PCLK is

selected. (If the CPU is powered down, the watchdog is disabled if WDCLK = 0, see Section 15.5). (Note: If

both WDTE and WDSE are set to 1, this bit is forced to 1.) Refer to Section15.3 for details.

1 WDTOF Watchdog Timer Time-Out Flag. This bit is set when the 8-bit down counter underflows. In watchdog mode,

a feed sequence will clear this bit. It can also be cleared by writing a logic 0 to this bit in software.

2 WDRUN Watchdog Run Control. The watchdog timer is started when WDRUN = 1 and stopped when WDRUN = 0.

This bit is forced to 1 (watchdog running) and cannot be cleared to zero if both WDTE and WDSE are set to

1.

3:4 - reserved

5PRE0

Clock Prescaler Tap Select. Refer to Table 89 for details.6PRE1

7PRE2

Table 89: Watchdog timeout vales

PRE2 to PRE0 WDL in decimal) Timeout Period

(in watchdog clock

cycles)

Watchdog Clock Source

400KHz Watchdog

Oscillator Clock

(Nominal)

12 MHz CCLK (6 MHz

CCLK⁄2 Watchdog

Clock)

000 0 33 82.5 µs 5.50µs

255 8,193 20.5 ms 1.37ms

001 0 65 162.5 µs 10.8 µs

255 16,385 41.0 ms 2.73ms

010 0 129 322.5 µs 21.5 µs

255 32,769 81.9 ms 5.46ms

011 0 257 642.5 µs 42.8 µs

255 65,537 163.8 ms 10.9ms

100 0 513 1.28 ms 85.5 µs

255 131,073 327.7 ms 21.8ms

101 0 1,025 2.56 ms 170.8 µs

255 262,145 655.4 ms 43.7ms

Contents

Main Contact information 1. Introduction 1.1 Comparison to the P89LPC932 device 1.1.1 Byte-erasability (IAP-Lite) 1.1.2 Serial in-circuit programming (ICP) 1.1.3 On-the-fly clock selection 1.1.4 Increased ISP/IAP functionality User manual Rev. 02 23 May 2005 5 of 133 1.1.5 Previous errata fix Fig 1. P89LPC932A1 TSSOP28 pin configuration. 1.2 Pin configuration P89LPC932A1FDH Fig 2. P89LPC932A1 PLCC28 pin configuration. Fig 3. P89LPC932A1 HVQFN28 pin configuration. P89LPC932A1FA P89LPC932A1FHN 1.3 Pin description P89LPC932A1 User manual Philips Semiconductors UM10109 P89LPC932A1 User manual Philips Semiconductors UM10109 Page Fig 4. P89LPC932A1 block diagram. P89LPC932A1 Page Page Page Page Page Page Page User manual Rev. 02 23 May 2005 20 of 133 1.5 Memory organization Fig 5. P89LPC932A1 memory map. 2. Clocks 2.1 Enhanced CPU 2.2 Clock definitions 2.2.1 Oscillator Clock (OSCCLK) 2.2.2 Low speed oscillator option 2.4 On-chip RC oscillator option 2.5 Watchdog oscillator option 2.6 External clock input option User manual Rev. 02 23 May 2005 23 of 133 2.7 Oscillator Clock (OSCCLK) wake-up delay Fig 7. Block diagram of oscillator control. Fig 6. Using the crystal oscillator. 2.8 CPU Clock (CCLK) modification: DIVM register 2.9 Low power select 3. Interrupts 3.1 Interrupt priority structure 3.2 External Interrupt pin glitch suppression Page 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 set. 6.1 Reset vector 7. Timers 0 and 1 7.1 Mode 0 Page Page 7.6 Timer overflow toggle output Fig 16. Timer/counter 0 or 1 in Mode 2 (8-bit auto-reload). Fig 18. Timer/counter 0 or 1 in mode 6 (PWM auto-reload). Fig 17. Timer/counter 0 Mode 3 (two 8-bit counters). 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 8.4 Reset sources affecting the Real-time clock Page 9. Capture/Compare Unit (CCU) 9.1 CCU Clock (CCUCLK) 9.2 CCU Clock prescaling 9.3 Basic timer operation Page 9.4 Output compare Page 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 Page Fig 24. Capture/compare unit interrupts. Page 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 Fig 27. Serial Port Mode 1 (only single transmit buffering case is shown). Fig 28. Serial Port Mode 2 or 3 (only single transmit buffering case is shown). If SM2 = 1 in modes 2 and 3, RI and FE behaves as in the following table. 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 11.6.1 Master Transmitter mode 11.6.2 Master Receiver mode 11.6.3 Slave Receiver mode 11.6.4 Slave Transmitter mode Fig 36. I2C serial interface block diagram. Page Page Page Page Page 12. Serial Peripheral Interface (SPI) Page Page Fig 39. SPI dual device configuration, where either can be a master or a slave. Fig 38. SPI single master single slave configuration. 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 Fig 41. SPI slave transfer format with CPHA = 0. Fig 42. SPI slave transfer format with CPHA = 1. Fig 43. SPI master transfer format with CPHA = 0. 12.7 SPI clock prescaler select 13. Analog comparators 13.1 Comparator configuration Page 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 14. Keypad interrupt (KBI) 15. Watchdog timer (WDT) 15.1 Watchdog function 15.2 Feed sequence Page Philips Semiconductors UM10109 The maximum number of tclks is: (3) Tabl e 89 shows sample P89LPC932A1 timeout values. tclks 2 ()255 1+()1 1048577=+= 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 18. Flash memory 18.1 General description 18.2 Features Page Page Page 18.5 In-circuit programming (ICP) 18.6 ISP and IAP capabilities of the P89LPC932A1 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) Page Page 18.12 In-application programming (IAP) (This feature was not present in the original P89LPC932). 18.13 IAP authorization key 18.14 Flash write enable 18.15 Configuration byte protection 18.16 IAP error status Page Page 18.17 User configuration bytes 18.18 User security bytes This device has three security bits associated with each of its eight sectors, as shown in Table103 18.19 Boot Vector register 18.20 Boot status register Page 19. Instruction set Page Page Page 20. Disclaimers 21. Trademarks continued >> 22. Contents