PIC32MX270F256B

Part: PIC32MX270F256B — Microchip Technology Inc.

Type: 32-bit Microcontroller

Description: 32-bit MIPS32 M4K MCU operating up to 50 MHz (83 DMIPS) with 256 KB Flash, 64 KB SRAM, Full-Speed USB 2.0 OTG, and advanced analog peripherals.

Operating Conditions:

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

Key Specs:

• Core: MIPS32 M4K running at up to 50 MHz (83 DMIPS)
• Dynamic current: 0.5 mA/MHz (typical)
• Power-down current (IPD): 44 μA (typical)
• ADC: 10-bit resolution, 1.1 Msps sample rate with 1 S&H (9 analog input channels)
• Internal oscillator accuracy: 0.9%
• I/O current drive: 10 mA source/sink on all I/O pins (up to 14 mA on non-standard VOH)
• UART data rate: up to 12.5 Mbps
• SPI data rate: up to 25 Mbps

Features:

• MIPS16e mode for up to 40% code size reduction
• USB 2.0-compliant Full-Speed OTG controller with 2 dedicated DMA channels
• 4 hardware DMA channels with automatic data size detection
• Charge Time Measurement Unit (CTMU) supporting mTouch capacitive touch sensing and 1 ns time measurement
• Peripheral Pin Select (PPS) for remappable digital I/O functions
• Up to 3 analog comparators with programmable 32-point voltage references
• Audio interface supporting I2S, Left-Justified, Right-Justified, and DSP modes
• 5V-tolerant digital inputs

Applications:

• Audio and graphics interfaces
• Embedded USB applications
• Capacitive touch sensing interfaces
• General-purpose 32-bit embedded control

Package:

• 28-pin SOIC (17.90 x 7.50 x 2.65 mm)
• 28-pin SSOP (10.2 x 5.3 x 2 mm)
• 28-pin SPDIP (1.365" x 0.285" x 0.135")
• 28-pin QFN (6 x 6 x 0.9 mm)

• 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