EM6607 EM Microelectronic, EM6607 Datasheet - Page 10

• Manufacturer Part Number: EM6607
• Description: Ultra-low power microcontroller
• Manufacturer: EM Microelectronic

4.3
With a mask option it is possible to choose from eleven PortA reset combinations. The selected ports must be simultaneously
high for at least 2ms/16ms (CLK = 32kHz) due to the presence of debouncers. Note also, that RESET with port A is not
possible during SLEEP mode.
Below are the combinations of Port A (PA0..PA3) inputs, which can be used to generate a RESET. They can be selected by
metal « PortA RESET » mask option, described in chapter 14.
Table 4.
4.4
The Watchdog Timer RESET is a software option and if used it will generate a RESET if it is not cleared. See section 5.
Watchdog timer for details.
Table 5.
4.5
This is software generation of POR, which can be used mainly to reset the circuit and start again the Power-Check function if
enabled to be sure that V
When V
user can generate POR at V
guarantee the proper circuit operation, not to fall in a grey zone below V
Table 6.
Copyright © 2005, EM Microelectronic-Marin SA
Function
NO inputs RESET
RESET = PA0 AND PA1
RESET = PA0 AND PA2
RESET = PA1 AND PA2
RESET = PA0 AND PA1 AND PA2
RESET = PA0 AND PA3
RESET = PA1 AND PA3
RESET = PA0 AND PA1 AND PA3
RESET = PA2 AND PA3
RESET = PA0 AND PA2 AND PA3
RESET = PA1 AND PA2 AND PA3
RESET = PA0 AND PA1 AND PA2 AND PA3
Watchdog Function
Without Watchdog Time-out reset
With Watchdog Time-out reset
Software POR function
Software POR start
No Software POR
Input port (PA0..PA3) RESET
Software Power-On-Reset
Watchdog Timer RESET
DD
starts to decrease due to any reason and software by periodically testing the V
PortA Inputs RESET options (metal Hardware option)
Watchdog-Timer Option (software option)
Software Power-On-Reset
R
DD
supply is high enough when circuit will start to work again due to increased V
DD
min and like that the circuit will go in Reset until Power-Check level is satisfied again to
NoWD bit in Option register
SoftPOR in RegSoftPOR register
Opt. Code
rstpa_no
rstpa_3h
rstpa_5h
rstpa_6h
rstpa_7h
rstpa_9h
rstpa_ah
rstpa_bh
rstpa_ch
rstpa_dh
rstpa_eh
rstpa_fh
1
0
1
0
10
DD
min until Static POR does it job at typ. 0.9V.
DD
min by SVLD function detects this,
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EM6607
DD
.