Datasheet

REV. A
ADuC834
–41–
INTVAL User Time Interval Select Register
Function 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
generates an interrupt if enabled. (See IEIP2 SFR description under Interrupt System in this
data sheet.)
SFR Address A6H
Power-On Default Value 00H
Reset Default Value 00H
Bit Addressable No
Valid Value 0 to 255 decimal
HTHSEC Hundredths Seconds Time Register
Function This register is incremented in (1/128) second intervals once TCEN in TIMECON is active.
The HTHSEC SFR counts from 0 to 127 before rolling over to increment the SEC time register.
SFR Address A2H
Power-On Default Value 00H
Reset Default Value 00H if TCEN = 0, Previous Value before reset if TCEN = 1
Bit Addressable No
Valid Value 0 to 127 decimal
SEC Seconds Time Register
Function This register is incremented in 1-second intervals once TCEN in TIMECON is active. The SEC
SFR counts from 0 to 59 before rolling over to increment the MIN time register.
SFR Address A3H
Power-On Default Value 00H
Reset Default Value 00H if TCEN = 0, Previous Value before reset if TCEN = 1
Bit Addressable No
Valid Value 0 to 59 decimal
MIN Minutes Time Register
Function This register is incremented in 1-minute intervals once TCEN in TIMECON is active.
The MIN counts from 0 to 59 before rolling over to increment the HOUR time register.
SFR Address A4H
Power-On Default Value 00H
Reset Default Value 00H if TCEN = 0, Previous Value before reset if TCEN = 1
Bit Addressable No
Valid Value 0 to 59 decimal
HOUR Hours Time Register
Function This register is incremented in 1-hour intervals once TCEN in TIMECON is active.
The HOUR SFR counts from 0 to 23 before rolling over to 0.
SFR Address A5H
Power-On Default Value 00H
Reset Default Value 00H if TCEN = 0, Previous Value before reset if TCEN = 1
Bit Addressable No
Valid Value 0 to 23 decimal