User's Manual
Table Of Contents
- 1 Introduction
- 2 Block Diagram
- 3 Application Interface
- 3.1 Power Supply
- 3.2 Power-up / -down Slew-Rate
- 3.3 Reset
- 3.4 Supply Voltage Monitor
- 3.5 Serial Interface
- 3.6 GPIO Interface
- 3.7 I2C Interface0F
- 3.8 SPI Serial Peripheral Interface1F
- 1.1
- 3.9 Bluetooth Radio Interface
- 3.10 WLAN Coexistence Interface2F
- 3.11 Slow Clock Interface
- 3.12 Test Mode Enable
- 3.13 Pin Strapped System Memory Boot Mode Invocation
- 3.14 Operating in a Power-Switched Environment
- 3.15 Serial Wire Interface
- 4 Module Pins
- 5 Electrical Characteristics
- 6 Mechanical Characteristics
- 1
- 7 Application Diagram
- 8 Approvals/Certifications
- 9 Related Documents
- 10 Packing
- 11 Ordering Information
BlueMod+SR/AI
BlueMod+SR/AP
Hardware Reference
Release r04d01 www.stollmann.de Page 18 of 65
3.7 I
2
C Interface
1
The I
2
C bus interface serves as an interface between the internal microcontroller and the serial I
2
C
bus. It provides multimaster capability, and controls all I
2
C bus specific sequencing, protocol,
arbitration and timing. It supports standard (100kHz) and fast (400kHz) speed modes.
GPIO[1]/I2C-SDA and GPIO[0]/I2C-SCL can be used to form an I
2
C interface. It is required to
connect 4k7 pull-up resistors on I2C-SCL and I2C-SDA when this interface is used.
I2C-SCL
I2C-SDA
GPIO[0]/I2C-SCL
GPIO[1]/I2C-SDA
BlueMod+SR
VSUP
Rpu
4k7
+3.3V
B-2
D-3
C-1,E-6,F-6
+3.3V
Rpu
4k7
+3.3V
Figure 7: BlueMod+SR I
2
C Interface
1
subject to firmware support, contact Stollmann for current status