MT6261A IC

Product Details
Product Details:

- Part Number: MT6261A

- Sibling Variants: MT6261D, MT6261M, MT6261MA, MT6260

- Manufacturer: MediaTek Inc. (MTK)

- Function: Highly-Integrated 2G Baseband & Application Processor System-on-Chip (SoC)

- Core Architecture:

* CPU Core: 32-bit ARM7EJ-S RISC processor running up to 260 MHz

* Embedded Memory: 4MB (32Mb) internal PSRAM / pseudo-SRAM

* External Flash Support: Serial SPI Flash memory (4MB / 8MB / 16MB)

- Integrated On-Chip Subsystems (Single-Die Integration):

* Integrated Power Management Unit (PMU): Internal LDOs, battery charging circuit, and power path

* Cellular Baseband & RF Transceiver: GSM / GPRS Quad-Band (850/900/1800/1900 MHz)

* Wireless & Media: Integrated Bluetooth 3.0 controller and FM Radio tuner

* Audio Section: Voice/Audio ADC & DAC with built-in Class-AB / Class-D Speaker Amplifier

* Display & Camera Interface: Supports SPI/parallel LCDs (128x160, 240x240, 240x320) and VGA Camera sensor

- Operating System: Nucleus RTOS / MediaTek MAUI platform

- Package Type: Fine-Pitch TFBGA / BGA

- Mounting Type: Surface Mount Technology (SMD BGA Soldering / Hot Air Rework)

Usage:

- Core Platform Controller: Powers 2G keypad phones and wearable devices, driving the user interface, GSM connectivity, voice calls, SMS, multimedia playback, and battery charging from a single chip.

- Target Devices & Applications:

* 2G Feature Phones (Keypad Phones):

- QMobile: Power series, D-series, E-series, B-series

- Itel: it2160, it2171, it2173, and similar models

- Nokia: 105, 106, 130, 150, 3310 (2017 editions using MTK platforms)

- Voice, G'Five, Jazz Digit (basic 2G models), Club, Calme

* Smartwatches & Wearables:

- DZ09, GT08, V8, A1, and children's GPS SOS tracking watches

* Telematics & IoT:

- 2G GPS vehicle trackers, smart meters, asset trackers, and GSM alarm communicators

- Common Fault Symptoms & Motherboard Diagnostics:

* Dead Phone (No Power / Low Current Hang): Phone does not turn on; on DC power supply, pressing the power button draws a low static hang (0.02A–0.04A) or 0.00A, caused by damaged internal PMU circuitry or absent 26 MHz system clock oscillation.

* Auto-Power-On on Battery Insertion: Connecting battery causes the phone to turn on or vibrator to buzz continuously without pressing the power key, resulting from a shorted internal power-switch transistor.

* Dead After Wrong Flash / Software Crash: Device does not boot or is stuck on boot logo after an incorrect firmware flash; recoverable via Miracle Box, CM2 (Infinity Chinese Miracle 2), or FlashTool using MTK USB COM port.

* Audio Failure (No Ringtone / Ear Speaker / Mic): Interruption in the internal audio driver block (frequently triggered by high-voltage charger surges or shorted speaker coils) leaves the phone completely silent.

* No Network / Emergency Calls Only: Failure in the integrated RF baseband transceiver or external RF power amplifier (PA) supply line prevents network registration.