datasheet (3).pdf - EEWeb

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dsPIC33FJ32MC302/304, dsPIC33FJ64MCX02/X04 AND dsPIC33FJ128MCX02/X04 31.2 AC Characteristics and Timing Parameters This section defines dsPIC33FJ32MC302/304, dsPIC33FJ64MCX02/X04 and dsPIC33FJ128MCX02/X04 AC characteristics and timing parameters. TABLE 31-14: TEMPERATURE AND VOLTAGE SPECIFICATIONS – AC AC CHARACTERISTICS Standard Operating Conditions: 3.0V to 3.6V (unless otherwise stated) Operating temperature -40°C ≤ TA ≤ +85°C for Industrial -40°C ≤ TA ≤ +125°C for Extended Operating voltage VDD range as described in Table 31-1. FIGURE 31-1: LOAD CONDITIONS FOR DEVICE TIMING SPECIFICATIONS Load Condition 1 – for all pins except OSC2 Load Condition 2 – for OSC2 Pin VDD/2 VSS TABLE 31-15: CAPACITIVE LOADING REQUIREMENTS ON OUTPUT PINS RL CL Param No. Symbol Characteristic Min Typ Max Units Conditions DO50 COSCO OSC2/SOSCO pin — — 15 pF In XT and HS modes when external clock is used to drive OSC1 DO56 CIO All I/O pins and OSC2 — — 50 pF EC mode DO58 CB SCLx, SDAx — — 400 pF In I2C mode DS70291E-page 354 © 2011 Microchip Technology Inc. Pin VSS CL RL = 464Ω CL = 50 pF for all pins except OSC2 15 pF for OSC2 output
dsPIC33FJ32MC302/304, dsPIC33FJ64MCX02/X04 AND dsPIC33FJ128MCX02/X04 FIGURE 31-2: EXTERNAL CLOCK TIMING OSC1 CLKO OS41 Q1 Q2 Q3 Q4 OS20 OS25 OS40 Q1 Q2 Q3 Q4 OS30 OS30 OS31 OS31 TABLE 31-16: EXTERNAL CLOCK TIMING REQUIREMENTS Standard Operating Conditions: 3.0V to 3.6V AC CHARACTERISTICS (unless otherwise stated) Operating temperature -40°C ≤ TA ≤ +85°C for Industrial -40°C ≤ TA ≤ +125°C for Extended Param No. Symb Characteristic Min Typ (1) Max Units Conditions OS10 FIN External CLKI Frequency (External clocks allowed only in EC and ECPLL modes) DC — 40 MHz EC Oscillator Crystal Frequency 3.5 10 © 2011 Microchip Technology Inc. DS70291E-page 355 — — — 10 40 33 MHz MHz kHz OS20 TOSC TOSC = 1/FOSC 12.5 — DC ns — OS25 TCY Instruction Cycle Time (2) 25 — DC ns — OS30 TosL, TosH OS31 TosR, TosF External Clock in (OSC1) High or Low Time External Clock in (OSC1) Rise or Fall Time XT HS SOSC 0.375 x TOSC — 0.625 x TOSC ns EC — — 20 ns EC OS40 TckR CLKO Rise Time (3) — 5.2 — ns — OS41 TckF CLKO Fall Time (3) — 5.2 — ns — OS42 GM External Oscillator Transconductance (4) 14 16 18 mA/V VDD = 3.3V TA = +25ºC Note 1: Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. 2: Instruction cycle period (TCY) equals two times the input oscillator time-base period. All specified values are based on characterization data for that particular oscillator type under standard operating conditions with the device executing code. Exceeding these specified limits may result in an unstable oscillator operation and/or higher than expected current consumption. All devices are tested to operate at “min.” values with an external clock applied to the OSC1/CLKI pin. When an external clock input is used, the “max.” cycle time limit is “DC” (no clock) for all devices. 3: Measurements are taken in EC mode. The CLKO signal is measured on the OSC2 pin. 4: Data for this parameter is Preliminary. This parameter is characterized, but not tested in manufacturing.
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Page 329 and 330: © 2011 Microchip Technology Inc. D
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