UlSwitch LCD Module

The display circuit includes LCD module GD47 (84x48 pixels) and 2 capacitors. The LCD module is COG (Chip on Glass) technology. The connection method for chip on the glass is ACF, Adhesive Conductive Film. The LCD module is connected to the PCB with spring contacts. Capacitors are placed on PCB. The display driver includes HW-reset, voltage tripler or quadrupler which depends on temperature, temperature compensating circuit and low power control. Driver includes 84x48 bit RAM memory that is...

Technical Summary

The baseband module includesfourASICs CHAPS, CCONT, COBBA-GJP and MAD2WD1, which take care ofthe baseband functions of the engine. The baseband is designed to work with the DCT-4 type direct conversion RF. The baseband is running from a 2.8V power rail (VBB), which is supplied by a power controlling ASIC CCONT. In the CCONT there are 6 individually controlled regulator outputs for RF-section and two outputs for the baseband. In addition, there is one +5V power supply output (V5V). The CCONT...

Power up with a charger

When the charger is connected, CCONT will switch on the CCONT digital voltage as soon as the battery voltage exceeds 3.0V. The reset for CCONT's digital parts is released when the operating voltage is stabilized (50 us from switching on the voltages). Operating voltage forVCXO is also switched on. The counter in CCONT digital section will keep MAD2WD1 in reset for 62 ms (PURX) to make sure that the clock provided by VCXO is stable. After this delay, MAD2WD1 reset is released, and VCXO -control...

Mhz Arm Nokia 3310 Mad2wd1

MAD2WD1 containsfollowing building blocks ARM RISC processor with both 16-bit instruction set (THUMB mode) and 32-bit instruction set (ARM mode) API (Arm Port Interface memory) for MCU-DSP communication, DSP code download, MCU interrupt handling vectors (in DSP RAM) and DSP booting. Serial port (connection to PCM) BUSC (Bus Controller for controlling accesses from ARM to API, System Logic and MCU external memories, both 8- and 16-bit memories) CTSI (Clock, Timing, Sleep and Interrupt control)...

Flash Protection V VPP

At +2.8V Programming the Vpp input of the Flash (ref. D301) is controlled by the MAD2WD1 as a write enable signal. The MAD2WD1 will control EEPROM access and all reprogramming in After Sales (HDa12 Service tools). The purpose of the 3.0V Voltage Detector D300 is to guarantee no writing to the Flash if the Battery voltage is insufficient (< 3.0V). If VB< 3.0V, then the Open drain FET output of the detector shorts, and by this inhibit the MAD2WD1 to generate VPP (write enable) to the Flash. +...

Battery temperature BTEMP

The battery temperature is measured with a NTC inside the battery pack. The BTEMP line inside transceiver has a 100k pull-up to VREF. The MCU calculates the battery temperature by reading the BTEMP line DC-voltage level with a CCONT (N201) A D-converter. Battery temperature indication 100k pull-up resistor to VREF in phone Battery package has NTC pull down resistor 47kQ. + -5 +25 C , B 4050+ -3 IBI-pulse,Phone power up by battery (input) Power up pulse width Figure 12 Standard Battery, BTEMP...

Sleep Mode

In the sleep mode all the regulators except the baseband VBB and the SIM card VSIM regulators are off. Sleep mode is activated by the MAD2WD1 after MCU and DSP clocks have been switched off. The voltage regulators for the RF section are switched off and the VCXO power control, VCXOPwr is set low. In this state, only the 32 kHz sleep clock oscillator in CCONT is running. The flash memory power down input is connected to the ExtSysResetX signal, and the flash is deep powered down during the sleep...

Battery identification BSI

Battery Bsi Resistor

Different battery types are identified by a pull-down resistor inside the battery pack. In the baseband area of the transceiver, the BSI line has a 150k pull-up to VBB. The MCU can identify the battery by reading the BSI line DC-voltage level with a CCONT (N201) A D-converter. Battery Size Indication pull-up to VBB 150k 5 SIM Card removal detection Treshold 2.4V VBB22.8V Indication resistor for BMC-2 battery (640mAh, NiMH) Indication resistor for BMC-3 battery (900mAh, NiMH) Indication resistor...

Battery Charging

Nokia3310 Battery Connector Pin Details

The electrical specification gives the idle voltages produced by the acceptable chargers at the DC connector input (CHRGR+). The absolute maximum input voltage is 30V, due to the transient suppressor that is protecting the charger input. At phone end there is no difference between a plug-in charger and a desktop charger because the DC-jack pins and bottom connector charging pads are connected internally in the System connector. The control-line of three terminal chargers is connected to GND on...

Mounting the ACover

Slide the A-Cover on to the D-Cover 2. Push down the lower end ofthe A-Cover until it snaps on. 1. Slide the battery side with the PCB pads under the hooks in the D-cover. 2. Push down the battery until it locks. 1. Slide the battery side with the PCB pads under the hooks in the D-cover. 2. Push down the battery until it locks.