hardware design v1 00 2
Table Of Contents
- Contents
- Version History
- 1 Introduction
- 2 SIM900R Overview
- 3 Package Information
- 4 Application Interface
- 4.1 Power Supply
- 4.2 Power on/down Scenarios
- 4.3 Power Saving Mode
- 4.4 RTC Backup
- 4.5 Serial Interfaces
- 4.6 Audio Interfaces
- 4.7 SIM Card Interface
- 4.8 LCD Display/SPI Interface
- 4.9 Keypad Interface
- 4.10 ADC
- 4.11 RI Behaviours
- 4.12 Network Status Indication
- 4.13 General Purpose Input/Output (GPIO)
- 4.14 External Reset
- 4.15 PWM
- 4.16 I2C Bus
- 4.17 Antenna Interface
- 5 Electrical, Reliability and Radio Characteristics
- 5.1 Absolute Maximum Ratings
- 5.2 Recommended Operating Conditions
- 5.3 Digital Interface Characteristics
- 5.4 SIM Card Interface Characteristics
- 5.5 VDD_EXT Characteristics
- 5.6 SIM_VDD Characteristics
- 5.7 VRTC Characteristics
- 5.8 Current Consumption (VBAT = 3.8V)
- 5.9 Electro-Static Discharge
- 5.10 Radio Characteristics
- 6 Manufacturing
- Appendix
Smart Machine Smart Decision
3 Package Information
3.1 Pin out Diagram
SIM900R_Hardware Design_V1.00 12 2012-07-20
GPIO 12
GPIO11
STATUS
GND
GND
GND
GND
GND
RF _A N T
GND
GND
VBAT
VBAT
VBAT
GND
GND
NETLIGHT
PWRKEY GPIO10
NC GPIO9/KBC1
DTR GPIO8/KBC2
RI GPIO7/KBC3
DCD GPIO6/KBC4
NC GND
CTS GND
RTS GPIO5/KBR0
TXD GPIO4/KBR1
RX D GPIO3/KBR2
GPIO2/KBR3
GPIO1/KBR4
GND
SCL
SDA
NRESET PWM2
GND PWM1
GND
MIC_P
MIC_N
SPK_P
SPK_N
LINEIN_R
LINEIN_L
ADC
VRTC
DBG_TXD
DBG_RXD
GND
SIM_VDD
SIM_DATA
SIM_CLK
SIM_RS T
SIM_PRESENCE
VDD_EXT
DISP_CLK
DISP_DATA
DISP_D/C
DISP_CS
68
67
66
65
58
57
64
63
62
61
52
1 51
56
55
54
53
60
59
2 50
3 49
4 48
5 47
6 46
7 45
9 43
8 44
11 41
10 42
12 40
13 39
14 38
15 37
16 36
17 35
18
19
20
21
22
23
24
2
SIM900
TOP VIEW
5
26
27
28
29
34
30
31
32
33
SIM900R
TOP VIEW
Figure 2: SIM900R pin out diagram (Top view)