SN8P1602B
8-Bit Micro-Controller
2CODE OPTION TABLE
SN8P1602B
Code Option
Content
Function Description
Low cost RC for external high clock oscillator
RC
Low frequency, power saving crystal (e.g. 32.768K) for external high
clock oscillator
32K X’tal
High_Clk
12M X’tal
4M X’tal
Enable
High speed crystal /resonator (e.g. 12M) for external high clock oscillator
Standard crystal /resonator (e.g. 3.58M) for external high clock oscillator
External high clock divided by two, Fosc = high clock / 2
Fosc = high clock
Enable Oscillator Safe Guard function to enhance noise immunity
performance.
High_Clk / 2
OSG
Disable
Enable
Disable
Enable
Disable
Enable
Disable
Enable
Disable
Enable
Disable
Disable Oscillator Safe Guard function
Enable Watch Dog function
Disable Watch Dog function
Enable Low Power function to save Operating current
Disable Low Power function
Enable Noise Filter function to enhance noise immunity performance
Disable Noise Filter function
Enable ROM code Security function
Watch_Dog
Low Power
Noise Filter
Security
Disable ROM code Security function
Force Watch Dog Timer clock source come from INT 16K RC.
Also INT 16K RC never stop both in power down and green mode that
means Watch Dog Timer will always enable both in power down and
green mode.
Always_ON
By_CPUM
INT_16K_RC
Enable or Disable internal 16K(at 3V) RC clock by CPUM register
Table 2-1 SN8P1602B Code Option Table
This table is for design guidance, not tested or guaranteed. Some values presented are outside specified operating
range. This is for information only and devices are guaranteed to operate properly only within the specified range.
Code Option
Lowest Operation Voltage
Enable
-
Disable
4 MHz
2.2V
2.2V
2.2V
2.2V
16 MHz
2.8V
Noise Filter/Low Power/OSG
Low Power/OSG
Noise Filter
Low Power
OSG
3.5V
Noise Filter/OSG
3.8V
Noise Filter/Low Power
2.9V
Table 2-2 SN8P1602B Minimum Working Voltage vs. Code Option and clock frequency
Notice:
ꢀ
Under high noisy environment, enable “Noise Filter”, “OSG” and disable “Low Power” is strongly
recommended.
ꢀ
The side effect is to increase the minimum working voltage if enables “Noise Filter”/“OSG”/ “Low Power”
code option. (Please refer to Characteristic Graphs)
ꢀ
ꢀ
ꢀ
Enable “Low Power” option will reduce operating current during the normal operating mode.
If users select “32K X’tal” in “High_Clk” option, assembler will force “OSG” to be enabled.
If users select “RC” in “High_Clk” option, assembler will force “High_Clk / 2” to be enabled.
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