SN8P2602B datasheet(21/95 Pages) SONIX

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SN8P2602B

8-Bit Micro-Controller

SONiX TECHNOLOGY CO., LTD

Page 21

Preliminary Version 0.4

2.1.2

CODE OPTION TABLE

Code Option

Content

Function Description

Enable

Enable Noise Filter and the Fcpu is Fosc/4~Fosc/8.

Noise_Filter

Disable

Disable Noise Filter and the Fcpu is Fosc/1~Fosc/8.

Fhosc/1

Instruction cycle is oscillator clock.

Notice: In Fosc/1, Noise Filter must be disabled.

Fhosc/2

Instruction cycle is 2 oscillator clocks.

Notice: In Fosc/2, Noise Filter must be disabled.

Fhosc/4

Instruction cycle is 4 oscillator clocks.

Fcpu

Fhosc/8

Instruction cycle is 8 oscillator clocks.

Low cost RC for external high clock oscillator and XOUT becomes to P1.4

bit-direction I/O pin.

32K X’tal

Low frequency, power saving crystal (e.g. 32.768KHz) for external high

clock oscillator.

12M X’tal

High speed crystal /resonator (e.g. 12MHz) for external high clock

oscillator.

High_Clk

4M X’tal

Standard crystal /resonator (e.g. 4M) for external high clock oscillator.

Always_On

Watchdog timer is always on enable even in power down and green

mode.

Enable

Enable watchdog timer. Watchdog timer stops in power down mode and

green mode.

Watch_Dog

Disable

Disable Watchdog function.

Reset

Enable External reset pin.

Reset_Pin

P15

Enable P1.5 input only without pull-up resister.

LVD_L

LVD will reset chip if VDD is below 2.0V

LVD_M

LVD will reset chip if VDD is below 2.0V

Enable LVD24 bit of PFLAG register for 2.4V low voltage indicator.

LVD

LVD_H

LVD will reset chip if VDD is below 2.4V

Enable LVD36 bit of PFLAG register for 3.6V low voltage indicator.

Enable

Enable ROM code Security function.

Security

Disable

Disable ROM code Security function.

Note:

In high noisy environment, enable “Noise Filter” and set Watch_Dog as “Always_On”

is strongly recommended. Enable “Noise_Filter” will limit the Fcpu = Fosc/4 ~ Fosc/8.

If users define watchdog as “Always_On”, assembler will Enable “Watch_Dog”

automatically.

Fcpu code option is only available for High Clock. Fcpu of slow mode is Fosc/4 (the

Fosc is internal low clock).

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