Phytec phyCORE-167CR, Hardware Manual

Page: 34 / 114

phyCORE-167CR/167CS
24

PHYTEC Meßtechnik GmbH 2002 L-527e_8
3.8 J11 RTC Interrupt Output
Jumper J11 determines whether the interrupt output of the RTC (U10)
is connected to port pin P2.9 of the microcontroller. If Jumper J11
remains open, P2.9 can be used as a port pin at X1A3.
The following configurations are possible:
Port P2.9 Configuration J11
Port P2.9 as I/O pin at X1A3 open
Port P2.9 as /INT input for RTC closed*
* = Default setting
Table 10: J11 RTC Interrupt Configuration
3.9 J12 Write Protection of EEPROM/FRAM
Various types of EEPROM/FRAM can populate space U9. Some of
these devices provide a write protection function. Closing Jumper J12
connects pin 7 of the serial EEPROM/FRAM with VCC and thus
activates write protection.
The following configurations are possible:
Write Protection EEPROM/FRAM J12
Write protection of EEPROM/FRAM
deactivated
open*
Write protection of EEPROM/FRAM
activated
closed
* = Default setting
Table 11: J12 Write Protection of EEPROM/FRAM