2.1.2 CODE OPTION TABLE
SN8P2608
8-Bit Micro-Controller
Code Option
High_Clk
Watch_Dog
Fcpu
Reset_Pin
Security
Noise_Filter
Content
RC
12M X’tal
4M X’tal
Always_On
Enable
Disable
Fosc/1
Fosc/2
Fosc/4
Fosc/8
Reset
P47
Enable
Disable
Enable
Disable
Function Description
Low cost RC for external high clock oscillator and XOUT becomes to
Fcpu output pin.
High speed crystal /resonator (e.g. 12MHz) for external high clock
oscillator.
Standard crystal /resonator (e.g. 4M) for external high clock oscillator.
Watchdog timer always on even in power down and green mode.
Enable watchdog timer. Watchdog timer stops in power down mode and
green mode.
Disable Watchdog function.
Instruction cycle is oscillator clock.
Notice: In Fosc/1, Noise Filter must be disabled.
Instruction cycle is 2 oscillator clocks.
Notice: In Fosc/2, Noise Filter must be disabled.
Instruction cycle is 4 oscillator clocks.
Instruction cycle is 8 oscillator clocks.
Enable External reset pin.
Enable P4.7 input only without pull-up resister.
Enable ROM code Security function.
Disable ROM code Security function.
Enable Noise Filter and the Fcpu is Fosc/4~Fosc/8.
Disable Noise Filter and the Fcpu is Fosc/1~Fosc/8.
Note:
1. 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.
2. If users define watchdog as “Always_On”, assembler will Enable “Watch_Dog”
automatically.
3. Fcpu code option is only available for High Clock. Fcpu of slow mode is Fosc/4 (the
Fosc is internal low clock).
SONiX TECHNOLOGY CO., LTD
Page 21
Version 1.4