EM6580SO14A EMMICRO [EM Microelectronic - MARIN SA], EM6580SO14A Datasheet - Page 14

• Manufacturer Part Number: EM6580SO14A
• Description: Ultra Low Power 8-pin Flash Microcontroller
• Manufacturer: EMMICRO [EM Microelectronic - MARIN SA]

Table 5.3.2 Control of Prescaler Register RegPresc
p* reset to ‘0’ by POR only.
With DebSel = 1 one may choose either the Ck[11] or Ck[14] debouncer frequency by selecting the
corresponding register mask option.(Refer to RegMFP1 table chapter
corresponding max. debouncer times are then 2 ms or 0.25 ms. For the register option selection refer to
chapter
Switching the PrIntSel may generate an interrupt request. Avoid it with MaskIRQ64/8 = 0 selection during the
switching operation.
The prescaler contains 2 interrupt sources:
There is no interrupt generation on reset.
The first IRQHz1 Interrupt occurs typically. 1 sec (if SysClk = 32kHz) after reset. (0.65 sec if SysClk is 50kHz).
NOTE: If not written explicitly all timing in peripherals is calculated for 32 kHz System Clock !
Copyright © 2006, EM Microelectronic-Marin SA
- IRQ64/8 ; this is Ck[7] or Ck[4] positive edge interrupt, the selection is depending on bit PrIntSel.
- IRQHz1 ; this is Ck[1] positive edge interrupt
Bit
3
2
1
0
ExtCPUclkON
ResPresc
PrIntSel
DebSel
1 4.8
9 7 H
R
Name
p
0
0
0
Reset
R/W
R/W
R/W
R/W
R/W
Ext. Clock selection instead of RC oscillator for CPUClk.
Write Reset prescaler
1
0
Prescaler Interrupt select.
Debouncer clock select. 0
Reset the divider chain from Ck[14] to Ck[2], sets Ck[1].
No action.
14
The Read value is always '0'
1 4.8) Relative to 32kHz the
9 6 H
1
0
Description
1
Debouncer with Ck[8]
Debouncer with Ck[11] or Ck[14]
Interrupt from Ck[4] (typ. 8/12 Hz)
Interrupt from Ck[7] (typ. 64/97 Hz)
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