Datasheet
Table Of Contents
- Features
- Applications
- Functional Block Diagram
- General Description
- Revision History
- Specifications
- Absolute Maximum Ratings
- Pin Configurations and Function Descriptions
- Typical Performance Characteristics
- Terminology
- Explanation of Typical Performance Plots
- Memory Organization
- Special Function Registers (SFRs)
- Special Function Registers
- ADC Circuit Information
- Calibrating the ADC
- Initiating Calibration in Code
- Nonvolatile Flash/EE Memory
- Using the Flash/EE Data Memory
- User Interface to Other On-Chip ADuC832 Peripherals
- On-Chip PLL
- Pulse-Width Modulator (PWM)
- PWM Modes of Operation
- Serial Peripheral Interface
- I2C-Compatible Interface
- Dual Data Pointers
- Power Supply Monitor
- Watchdog Timer
- Time Interval Counter (TIC)
- 8052-Compatible On-Chip Peripherals
- Timer/Counter 0 And Timer/Counter 1 Operating Modes
- Timer/Counter 2
- UART Serial Interface
- SBUF
- SCON (UART Serial Port Control Register)
- Mode 0: 8-Bit Shift Register Mode
- Mode 1: 8-Bit UART, Variable Baud Rate
- Mode 2: 9-Bit UART with Fixed Baud Rate
- Mode 3: 9-Bit UART with Variable Baud Rate
- UART Serial Port Baud Rate Generation
- Timer 1 Generated Baud Rates
- Timer 2 Generated Baud Rates
- Timer 3 Generated Baud Rates
- Interrupt System
- ADuC832 Hardware Design Considerations
- Other Hardware Considerations
- Development Tools
- Outline Dimensions

ADuC832 Data Sheet
Rev. B | Page 66 of 92
INTVAL (USER TIME INTERVAL SELECT REGISTER)
SFR Address: A6H
Power-On Default Value: 00H
Bit Addressable: No
Valid Value: 0 to 255 decimal
User code writes the required time interval to this register.
When the 8-bit interval counter is equal to the time interval
value loaded in the INTVAL SFR, the TII bit (TIMECON[2]) is
set and generates an interrupt if enabled.
HTHSEC (HUNDREDTHS SECONDS TIME
REGISTER)
SFR Address: A2H
Power-On Default Value: 00H
Bit Addressable: No
Valid Value: 0 to 127 decimal
This register is incremented in 1/128 second intervals when
TCEN in TIMECON is active. The HTHSEC SFR counts from 0
to 127 before rolling over to increment the SEC time register.
SEC (SECONDS TIME REGISTER)
SFR Address: A3H
Power-On Default Value: 00H
Bit Addressable: No
Valid Value: 0 to 59 decimal
This register is incremented in 1 second intervals when TCEN
in TIMECON is active. The SEC SFR counts from 0 to 59 before
rolling over to increment the MIN time register.
MIN (MINUTES TIME REGISTER)
SFR Address: A4H
Power-On Default Value: 00H
Bit Addressable: No
Valid Value: 0 to 59 decimal
This register is incremented in 1 minute intervals when TCEN
in TIMECON is active. The MIN counts from 0 to 59 before
rolling over to increment the hour time register.
HOUR (HOURS TIME REGISTER)
SFR Address: A5H
Power-On Default Value: 00H
Bit Addressable: No
Valid Value: 0 to 23 decimal
This register is incremented in 1 hour intervals when TCEN in
TIMECON is active. The hour SFR counts from 0 to 23 before
rolling over to 0.