K850
1203-2528 rev. 1
FUNCTIONAL OVERVIEW
Technical Description
FU
N
C
T
IO
N
A
L O
V
E
R
V
IE
W
K850 Technical Overview
General
5 megapixel Cyber-shot™ phone with auto focus
Automatic lens cover
Xenon flash with red-eye reduction
Auto rotation of photos
BestPic™, Photo fix and picture blogging
PictBridge support
x-Pict Story™
Media player, FM radio with RDS and TrackID™
Memory Stick Micro™ (M2™)
Bluetooth™ technology incl. stereo (A2DP)
Push email
Access NetFront™ Web Browser
Video call
Size: 102 x 48 x 17 mm
Weight: 118 grams
Networks
K850i: UMTS/HSDPA 850/1900/2100-GSM/GPRS/EDGE 850/900/1800/1900
Colors:
Luminous Green
Velvet Blue
Type of screen: 262,144 color TFT
Screen resolution: 240 x 320 pixels
Talk time GSM/UMTS: Up to 9 hrs/3 hrs 30 min
Standby time GSM/UMTS: Up to 400/350 hrs
Video call time: Up to 3 hrs 20 min
Hardware Overview
The K850 is using the U360 platform provided by Ericsson Mobile Platform (EMP)
Baseband Part
Analog Baseband Controller
Power Management
N2000 (Vera)
This component is not replaceable on SL 4 because Baseband calibration is required.
The analog baseband controller is a mixed digital and analog device that supports the following
circuitry:
• Power management circuitry
• Voltage regulation circuitry
• Eight Low Dropout (LDO) regulators and low power regulator
• 600 mA integrated Buck regulator
• Boost step-up DC/DC converter for driving White Light Emitting Diode (WLED)
• Battery charging and communication circuitry
• Battery fuel gauging circuitry
• Analog-to-Digital Converter (ADC)
• SIM interface
• Six programmable LED drivers
• Accurate band gap reference
• Vibrator driver
• Real Time Clock (RTC)
• Eight-byte One-Time Programmable (OTP) memory
• Pulse Code Modulation (PCM) voice coder/decoder
• PCM audio coder/decoder
• Microphone interface
• Stereo line input
• Earphone driver
• Earpiece driver
• 8-
Ω
speaker driver / Stereo line output
The analog baseband controller is controlled by an I2C™ interface. It also comprises the main
power management circuits, equipped with a number of converters and regulators for
generating the required supply voltages.
SEMC Troubleshooting Manual
62
(101)