PIC32MX270F256B

Part: PIC32MX1XX/2XX — Microchip Technology Inc.

Type: 32-bit Microcontroller (MCU)

Description: 32-bit MIPS32 M4K core microcontroller family operating up to 50 MHz, with up to 256 KB Flash and 64 KB SRAM, featuring audio and graphics interfaces, USB, and advanced analog capabilities including a 10-bit 1.1 Msps ADC.

Operating Conditions:

• Supply voltage: 2.3V to 3.6V
• Operating temperature: -40°C to +105°C (up to 40 MHz), -40°C to +85°C (up to 50 MHz)
• Max clock frequency: 50 MHz

Absolute Maximum Ratings:

Key Specs:

• Core: 50 MHz/83 DMIPS MIPS32 M4K
• Program Memory: 16 KB to 256 KB Flash
• Data Memory: 4 KB to 64 KB SRAM
• ADC: 10-bit, 1.1 Msps rate with one S&H
• Dynamic current: 0.5 mA/MHz (typical)
• IPD current: 44 μA (typical)
• I/O pin source/sink current: 10 mA (up to 14 mA on non-standard VOH)
• Communication interfaces: 2x UART (12.5 Mbps), 2x SPI (25 Mbps), 2x I2C (up to 1 Mbaud)

Features:

• MIPS16e mode for up to 40% smaller code size
• 0.9% internal oscillator
• Low-power management modes (Sleep and Idle)
• Charge Time Measurement Unit (CTMU) for capacitive touch sensing and temperature measurement
• USB 2.0-compliant Full-speed OTG controller (PIC32MX2XX family)
• Four channels of hardware DMA with automatic data size detection
• 5V-tolerant pins
• In-circuit and in-application programming

Applications:

Package:

• SOIC (28-pin)
• SSOP (28-pin)
• SPDIP (28-pin)
• QFN (28-pin, 44-pin)
• VTLA (36-pin, 44-pin)
• TQFP (44-pin)

• Data communication: I 2 S, LJ, RJ, and DSP modes
• Control interface: SPI and I 2 C
• Master clock:
• -Generation of fractional clock frequencies
• -Can be synchronized with USB clock
• -Can be tuned in run-time

This section provides an overview of the PIC32MX1XX/2XX 28/36/44-pin Family electrical characteristics for devices that operate at 40 MHz. Refer to Section 31.0 '50 MHz Electrical Characteristics' for additional specifications for operations at higher frequency. Additional information will be provided in future revisions of this document as it becomes available.

Absolute maximum ratings for the PIC32MX1XX/2XX 28/36/44-pin Family devices are listed below. Exposure to these maximum rating conditions for extended periods may affect device reliability. Functional operation of the device at these or any other conditions, above the parameters indicated in the operation listings of this specification, is not implied.

(See Note 1)

• Note 1: Stresses above those listed under 'Absolute Maximum Ratings' may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions, above those indicated in the operation listings of this specification, is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.
• 2: Maximum allowable current is a function of device maximum power dissipation (see Table 30-2).
• 3: See the 'Pin Diagrams' section for the 5V tolerant pins.

Examples of typical application connections are shown

in Figure 2-5 and Figure 2-6.

FIGURE 2-5: CAPACITIVE TOUCH SENSING WITH GRAPHICS APPLICATION

FIGURE 2-6: AUDIO PLAYBACK APPLICATION