HT48CA6 Ver la hoja de datos (PDF) - Holtek Semiconductor

Número de pieza

componentes Descripción

Fabricante

HT48CA6

8-Bit Remote Type Low Voltage Mask MCU

Holtek Semiconductor 

HT48CA6

No.

Mask Option

Carry frequency selection.

6

Clock Source

Carry frequency= (2 or 3) ´2n where n=0~3.

Carrier duty selection. There are two types of selection: 1/2 duty or 1/3 duty.

7

If carrier frequency= Clock Source / (2, 4, 8 or 16), the duty cycle will be 1/2 duty.

If carrier frequency= Clock Source / 3, the duty cycle will be 1/3 duty.

If carrier frequency= Clock Source / (6, 12 or 24), the duty cycle can be 1/2 duty or 1/3 duty.

OSC type selection. This option is to decide if an RC or Crystal oscillator is chosen as system clock. If the

8 Crystal oscillator is selected, the SST (System Start-up Timer) default is activated, otherwise the SST is

disabled.

Application Circuits

V DD

22m.

1W

300p.

X 'ta l

(s e e N o te 2 )

300p.

0 .1 m .

PB1

PB2

PB0

PB3

PA3

PB4

PA2

PB5

PA1

PB6

PA0

H T48C A 6 PB7

P C 0 /R E M

PA7

O SC1

PA6

O SC2

PA5

RES

PA4

Note: It is recommended that a 22mF decoupling capacitor is placed between VSS and VDD.

If the crystal has a value above 1MHz the capacitors are not required.

Rev. 1.10

11

July 26, 2002

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