49mm x 47mm SIM900A Module 2, Mobile Phone 3, 4G Card Control Pin All Leads

Features:

1. The onboard two set supply interface VCC5 5V supply, VCC4 interface, 3.5--4.5V supply, optional on self starting (default) and control start.
2. The onboard SMA (default) and IPXmini interface, SIM900A interface reserved reset.
3. The size of the module is 49*50, all the new and device.
4. The computer can give early computer debugging USB module supply, a very large amount of data under the condition of the recommended current more than 1A.
5. Standby dozens of MA data can be set to provide dormancy, dormancy of 10MA low .
6. 2, mobile phone 3, 4G card.
7. The serial port circuit: for 3.3V single microcomputer. TTL serial port
8. 3.3 and 5V single microcomputer.
9. The SIM card circuit to increase the SMF05C ESD .
10. circuit: guarantee short and straight, so as to ensure the signal strength.
11. display screen printing mark: each interface, convenient development two times, the SIM900/A hardware is completely follow the design when the design manual.
12. Two supply interface: VCC5, 5V above 1A.
13. Computer 5V supply can be early computer USB.
14. long data circuit over larger recommended 5V1A.
15. VCC4, 3.5--4.5V supply, ibid., suitable for .
16. Control pin all leads.
17. A TTL level, compatible with 3.3V and 5V.
18. The two interface, the default SMA straight head, connector for IPXmini .
19. One way of speech interface, the way Mike interface.

The control interface of each pin description:

GND - GND
SIMR SIM900A RXD, TTL level, can not be directly connected to the 232 level
SIMT SIM900A TXD, TTL level, can not be directly connected to the 232 level
RST - SIM900A reset, active low
VCC_MCU when the SIM900A module and 5V TTL level communication, this pin is connected to 5V; when the level of communication of SIM900A and 3.3V TTL, this pin is connected to 3.3V
VCC5---- 5V input
VCC4----DC3.5--4.5 input

Onboard resources:

Serial port circuit (with protection)
interface circuit (SMA bend female port)
SIM card circuit (flip SIM slot)
4*3.5 fixture hole 4pcs
SIM900A serial port output terminal

Specifications:

Size: 49mm x 47mm
Net weight: 28g
Weight: 38g

Package included:

1 x SIM900A
1 x cable
1 x

















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