HT47C06L datasheet(15/37 Pages) HOLTEK

15 / 37 page

HT47C06L

Rev. 1.00

June 15, 2007

Bit No.

Label

Function

OVB/OVA

In the RC type A/D converter mode, this bit is used to define the timer/event counter inter-

rupt which comes from timer A or timer B overflow.

(0= timer A overflow; 1= timer B overflow)

In the timer/event counter mode, this bit is void.

ADC/TM

Determines whether the 16-bit timer/event counter or RC type A/D converter is enabled.

(0= timer/event counter is enabled; 1= A/D converter is enabled)

MODE

Defines the A/D converter operating mode

0= RREF~CREF oscillation (reference resistor and reference capacitor)

1= RSEN~CREF oscillation (resistor sensor and reference capacitor)

BON

Low voltage detector disabled/enabled (0=disabled; 1=enabled)

BLF

Low voltage flag (0=battery power is good; 1=low battery)

5~7

Unused bit, read as

²0²

ADCR (25H) Register

Example for RC type AD converter mode (Timer A overflow):

clr tmrc

clr adcr.1

; set timer mode

clr intc.4

; clear timers/event counter interrupt request flag

mov a, low (65536-1000)

; give timer A initial value

mov tmrbl, a

; count 1000 time and then overflow

mov a, high (65536-1000)

mov tmrbh, a

mov a, 00000010b

; RREF~CREF; set RC type ADC mode; set Timer A overflow

mov adcr, a

mov a, 00h

; give timer B initial value

mov tmrbl, a

mov a, 00h

mov tmrbh, a

mov a, 01010000b

; timer A clock source=fSYS and timer on

mov tmrc, a

p10:

clr wdt

snz intc.4

; polling timer/event counter interrupt request flag

jmp p10

clr intc.4

; clear timer/event counter interrupt request flag

; program continue

HT47C06L Datasheet(PDF) 15 Page - Holtek Semiconductor Inc

HT47C06L Datasheet(HTML) 15 Page - Holtek Semiconductor Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

Datasheet Download

Link URL