PIC32MX250F128B-I/SO

Part: PIC32MX250F128B-I/SO — Microchip Technology

Type: 32-bit MIPS32 M4K Microcontroller with USB OTG

Description: 50 MHz/83 DMIPS MIPS32 M4K 32-bit MCU with 128+3 KB Flash, 32 KB SRAM, USB 2.0 Full-speed OTG, 10-bit 1.1 Msps ADC and 2.3–3.6 V operation, in a 28-pin SOIC.

Operating Conditions:

• Supply voltage: 2.3–3.6 V
• Operating temperature: -40 to +85 °C at DC to 50 MHz; -40 to +105 °C at DC to 40 MHz
• Max clock: 50 MHz (-40 to +85 °C); 40 MHz (-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 pin(s): 300 mA
• Max current out of VSS pin(s): 300 mA
• Max current sunk or sourced by any I/O pin: 15 mA
• Max current sunk by all ports: 200 mA; sourced by all ports: 200 mA
• Storage temperature: -65 to +150 °C
• Ambient temperature under bias: -40 to +105 °C

Key Specs:

• Core: MIPS32 M4K, 50 MHz, 83 DMIPS
• Memory: 128 KB program Flash plus 3 KB boot Flash, 32 KB data RAM
• Dynamic current: 0.5 mA/MHz typical
• Power-down current (IPD): 44 μA typical
• ADC: 10-bit, 1.1 Msps, 9 channels on this device
• I/O: 19 pins on this device, 10 mA source/sink on all I/O pins, 5V-tolerant pins
• Internal oscillator accuracy: 0.9%
• Communication: USB 2.0 Full-speed OTG, 2 UART (12.5 Mbps), 2 SPI (25 Mbps), 2 I²C (up to 1 Mbaud)

Features:

• MIPS16e mode for up to 40% smaller code size
• Three analog comparators with programmable references (32 voltage points)
• Charge Time Measurement Unit (CTMU) supporting mTouch capacitive sensing, 1 ns time resolution
• Five 16-bit timers (up to two 32-bit), 5 output compare, 5 input capture modules
• Peripheral Pin Select (PPS) for peripheral remapping
• RTCC, Parallel Master Port, programmable CRC
• 4 programmable DMA channels plus 2 dedicated to USB
• Audio interface: I²S, LJ, RJ and DSP modes
• 4-wire MIPS Enhanced JTAG, IEEE 1149.2 boundary scan
• Brown-out Reset, Power-on Reset, Watchdog Timer, Fail-Safe Clock Monitor
• Class B Safety Library, IEC 60730

Applications:

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

Package:

• 28-pin SOIC, 1.27 mm pitch, 17.90x7.50x2.65 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