PIC32MX250F128

Part: PIC32MX250F128B-I/SP — Microchip Technology

Type: 32-bit MIPS32 M4K Microcontroller with USB OTG

Description: 32-bit MIPS32 M4K MCU at up to 50 MHz (83 DMIPS) with 128 KB (+3 KB boot) Flash, 32 KB SRAM, USB 2.0 Full-speed OTG, 10-bit 1.1 Msps ADC, in a 28-pin SPDIP.

Operating Conditions:

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

Absolute Maximum Ratings:

• Max supply voltage (VDD with respect to VSS): -0.3 to +4.0 V
• Max current into VDD pins: 300 mA
• Max current out of VSS pins: 300 mA
• Max current per I/O pin: 15 mA sunk or sourced
• Max current all ports: 200 mA sunk or sourced
• Voltage on 5V-tolerant pins: -0.3 to +5.5 V (VDD ≥ 2.3 V)
• Storage temperature: -65 to +150 °C
• Ambient temperature under bias: -40 to +105 °C

Key Specs:

• Core: MIPS32 M4K, 50 MHz / 83 DMIPS
• Flash: 128 KB program + 3 KB boot; SRAM: 32 KB
• Dynamic current: 0.5 mA/MHz (typical)
• IPD current: 44 μA (typical)
• ADC: 10-bit, 1.1 Msps, 9 channels on this device
• I/O: 19 pins; 10 mA source/sink on all I/O pins
• Comparators: 3; DMA: 4 programmable + 2 USB-dedicated channels
• Communication: 2 UART (12.5 Mbps), 2 SPI (25 Mbps), 2 I2C (up to 1 Mbaud), PMP, USB OTG

Features:

• MIPS16e mode for up to 40% smaller code size
• 0.9% internal oscillator, programmable PLLs, Fail-Safe Clock Monitor, independent Watchdog Timer
• Integrated Power-on Reset and Brown-out Reset
• Sleep and Idle low-power modes
• Audio interface (I2S, LJ, RJ, DSP modes)
• Charge Time Measurement Unit (CTMU) with mTouch capacitive sensing support
• Five 16-bit timers (up to two 32-bit), 5 Output Compare, 5 Input Capture
• Peripheral Pin Select, RTCC
• Programmable CRC
• 5V-tolerant pins
• 4-wire MIPS Enhanced JTAG, in-circuit programming, IEEE 1149.2 boundary scan
• Class B Safety Library (IEC 60730)

Applications:

• USB-connected embedded devices
• Audio and graphics interface products
• Capacitive touch sensing designs

Package:

• SPDIP 28-pin (0.100" pitch, 1.365" x 0.285" x 0.135")
• Family also offered in SOIC, SSOP, QFN, VTLA and TQFP

• 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