HT67F60 datasheet(201/242 Pages) HOLTEK

201 / 242 page

HT67F30/HT67F40/HT67F50/HT67F60

TinyPowerTM A/D Flash Type 8-Bit MCU with LCD & EEPROM

Rev. 1.50

200

March 06 , 2012

Rev. 1.50

201

March 06 , 2012

EEPROM Interrupt

The EEPROM Interrupt, is contained within the Multi-function Interrupt. An EEPROM Interrupt

request will take place when the EEPROM Interrupt request flag, DEF, is set, which occurs when an

EEPROM Write cycle ends. To allow the program to branch to its respective interrupt vector

address, the global interrupt enable bit, EMI, EEPROM Interrupt enable bit, DEE, and associated

Multi-function interrupt enable bit, must first be set. When the interrupt is enabled, the stack is not

full and an EEPROM Write cycle ends, a subroutine call to the respective Multi-function Interrupt

vector, will take place. When the EEPROM Interrupt is serviced, the EMI bit will be automatically

cleared to disable other interrupts, however only the Multi-function interrupt request flag will be

also automatically cleared. As the DEF flag will not be automatically cleared, it has to be cleared by

the application program.

LVD Interrupt

The Low Voltage Detector Interrupt is contained within the Multi-function Interrupt. An LVD

Interrupt request will take place when the LVD Interrupt request flag, LVF, is set, which occurs

when the Low Voltage Detector function detects a low power supply voltage. To allow the program

to branch to its respective interrupt vector address, the global interrupt enable bit, EMI, Low Voltage

Interrupt enable bit, LVE, and associated Multi-function interrupt enable bit, must first be set. When

the interrupt is enabled, the stack is not full and a low voltage condition occurs, a subroutine call to

the Multi-function Interrupt vector, will take place. When the Low Voltage Interrupt is serviced, the

EMI bit will be automatically cleared to disable other interrupts, however only the Multi-function

interrupt request flag will be also automatically cleared. As the LVF flag will not be automatically

cleared, it has to be cleared by the application program.

TM Interrupts

The Compact and Standard Type TMs have two interrupts each, while the Enhanced Type TM has

three interrupts. All of the TM interrupts are contained within the Multi-function Interrupts. For each

of the Compact and Standard Type TMs there are two interrupt request flags TnPF and TnAF and

two enable bits TnPE and TnAE. For the Enhanced Type TM there are three interrupt request flags

TnPF, TnAF and TnBF and three enable bits TnPE, TnAE and TnBE. A TM interrupt request will

take place when any of the TM request flags are set, a situation which occurs when a TM comparator

P, A or B match situation happens.

To allow the program to branch to its respective interrupt vector address, the global interrupt enable

bit, EMI, respective TM Interrupt enable bit, and relevant Multi-function Interrupt enable bit, MFnE,

must first be set. When the interrupt is enabled, the stack is not full and a TM comparator match

situation occurs, a subroutine call to the relevant Multi-function Interrupt vector locations, will take

place. When the TM interrupt is serviced, the EMI bit will be automatically cleared to disable other

interrupts, however only the related MFnF flag will be automatically cleared. As the TM interrupt

request flags will not be automatically cleared, they have to be cleared by the application program.

HT67F60 Datasheet(PDF) 201 Page - Holtek Semiconductor Inc

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