HT56R67 datasheet(84/104 Pages) HOLTEK

84 / 104 page

HT56R67/HT56R668/HT56C668/HT56R678/HT56C678/HT56R688

Rev. 1.20

March 4, 2010

No.

Options

PFD Options

PA3: normal I/O or PFD output

PFD clock selection: Timer/Event Counter 0 or Timer/Event Counter 1

Buzzer Options

PA0/PA1: normal I/O or BZ/BZ or PA0=BZ and PA1 as normal I/O

Buzzer frequency: fS/2

2,f

S/2

3,f

S/2

4,f

S/2

5,f

S/2

6,f

S/2

7,f

S/2

8,f

S/2

Time Base Option

Time base time-out period: 2

12/f

S,2

13/f

S,2

14/f

S,2

15/f

LCD Option

LCD type: R or C - HT56R67 only

Watchdog Options

Watchdog Timer function: enable or disable

CLRWDT instructions: 1 or 2 instructions

WDT time-out period: 2

12/f

S~2

13/f

S,2

13/f

S~2

14/f

S,2

14/f

S~2

15/f

S,2

15/f

S~2

16/f

LVD/LVR Options

LVD function: enable or disable

LVR function: enable or disable

LVR/LVD voltage: 2.1V/2.2V or 3.15V/3.3V or 4.2V/4.4V

SPI Options

SIM pin enable/disable

SPI_WCOL: enable/disable

SPI_CSEN: enable/disable, used to enable/disable (1/0) software CSEN function

2C Option

2C debounce Time: no debounce, 1 system clock debounce, 2 system clock debounce

PINTB Option

External peripheral interrupt or Segment function

Timer/Event Counter and External Interrupt Pins Filter Option

Interrupt and Timer/Event Counter input pins internal filter On/Off control

- applies to all pins

Lock Options

Lock All

Partial Lock

HT56R67 Datasheet(PDF) 84 Page - Holtek Semiconductor Inc

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