Вопрос: можно в SLEEP переходить или с помощью DTR, или с помощью KBR0?
Или же с помощью DTR можно только "будить"?

AN_DESIGN_SIM300D.pdf

8. About Sleep Mode

The DTR pin of the module is provided to exit the Sleep Mode. If the user want to exit sleep
mode quickly. We recommend the KBR0 (pin10) to control the Sleep Mode. Normally, the
module enters into Sleep Mode when the KBR0 pin is externally pulled to a high level and exit
when it is pulled to a low level.


SIM300D_HD_V2.01.pdf

3.6.2 SLEEP mode (Slow Clocking mode)
You can use DTR signal to control SIM300D module to enter or exit the SLEEP mode in your
applications.

When DTR is in high level, at the same time there is no on air or audio activity is required and
no hardware interrupt (such as GPIO interrupt or data on serial port), SIM300D will enter
SLEEP mode automatically. In this mode, SIM300D can still receive paging or SMS from
network.

In SLEEP mode, the serial port is not accessible.
Note: For some special soft versions, it requests to set AT command “AT+CSCLK=1” to
enable the sleep mode; the default value is 0,that can’t make the module enter sleep
mode, for more details please refer to the AT command list.



SIM300DZ_HD_V2.07.pdf
Страница 19 KBR0 Pull up inside, if unused keep pins open

AN_DESIGN_SIM300D.pdf
Normally, the
module enters into Sleep Mode when the KBR0 pin is externally pulled to a high level and exit
when it is pulled to a low level.

По первой pdf-ке - получается он внутри подтянут.
А по второй - если "1" - то модуль преходит в SLEEP.
Получается он должен в SLEEP сам перейти, потому что подтянут, если конечно AT+CSCLK=1?

И чему верить?

Сообщение отредактировал xMw - Feb 2 2011, 08:50