Users Manual

GSM/GPRS Module Series
M66 Hardware Design
M66_Hardware_Design Confidential / Released 2 / 82
About the Document
History
Revision Date Author Description
1.0 2014-08-07 Felix YIN Initial
1.1 2014-11-24 Felix YIN
1. Modified output power of Bluetooth
2. Modified the timing of the RFTXMON signal
3. Updated Figure 5: Reference circuit for power
supply
4. Modified description of RTC and SIM card
interface
5. Modified description of UART Application
6. Deleted the over-voltage automatic shutdown
function
7. Modified the antenna gain in the Table 24
8. Modified the current consumption information in
Section 5.3 & 5.4
1.2 2016-07-08 King MA
1. Modified the configuration and timing of PCM
Interface
Added Chapter 3.11 SD Card
Interface
Updated the description of
Temperature Range