K20P81M72SF1 Datasheet, PDF (2/74 Pages) Freescale Semiconductor, Inc – K20 Sub-Family

Table of Contents
1 Ordering parts...........................................................................3
6 Peripheral operating requirements and behaviors....................22
1.1 Determining valid orderable parts......................................3
6.1 Core modules....................................................................22
2 Part identification......................................................................3
6.1.1 Debug trace timing specifications.........................22
2.1 Description.........................................................................3
6.1.2 JTAG electricals....................................................23
2.2 Format...............................................................................3
6.2 System modules................................................................25
2.3 Fields.................................................................................3
6.3 Clock modules...................................................................25
2.4 Example............................................................................4
6.3.1 MCG specifications...............................................25
3 Terminology and guidelines......................................................4
6.3.2 Oscillator electrical specifications.........................28
3.1 Definition: Operating requirement......................................4
6.3.3 32kHz Oscillator Electrical Characteristics............30
3.2 Definition: Operating behavior...........................................5
6.4 Memories and memory interfaces.....................................31
3.3 Definition: Attribute............................................................5
6.4.1 Flash electrical specifications................................31
3.4 Definition: Rating...............................................................6
6.4.2 EzPort Switching Specifications............................35
3.5 Result of exceeding a rating..............................................6
6.4.3 Flexbus Switching Specifications..........................36
3.6 Relationship between ratings and operating
6.5 Security and integrity modules..........................................39
requirements......................................................................6
6.6 Analog...............................................................................39
3.7 Guidelines for ratings and operating requirements............7
6.6.1 ADC electrical specifications.................................39
3.8 Definition: Typical value.....................................................7
6.6.2 CMP and 6-bit DAC electrical specifications.........48
3.9 Typical value conditions....................................................8
6.6.3 12-bit DAC electrical characteristics.....................50
4 Ratings......................................................................................9
6.6.4 Voltage reference electrical specifications............53
4.1 Thermal handling ratings...................................................9
6.7 Timers................................................................................54
4.2 Moisture handling ratings..................................................9
6.8 Communication interfaces.................................................55
4.3 ESD handling ratings.........................................................9
6.8.1 USB electrical specifications.................................55
4.4 Voltage and current operating ratings...............................9
6.8.2 USB DCD electrical specifications........................55
5 General.....................................................................................10
6.8.3 USB VREG electrical specifications......................55
5.1 AC electrical characteristics..............................................10
6.8.4 CAN switching specifications................................56
5.2 Nonswitching electrical specifications...............................11
6.8.5 DSPI switching specifications (limited voltage
5.2.1 Voltage and current operating requirements.........11
range)....................................................................56
5.2.2 LVD and POR operating requirements.................12
6.8.6 DSPI switching specifications (full voltage range).58
5.2.3 Voltage and current operating behaviors..............12
6.8.7 I2C switching specifications..................................59
5.2.4 Power mode transition operating behaviors..........13
6.8.8 UART switching specifications..............................60
5.2.5 Power consumption operating behaviors..............14
6.8.9 I2S/SAI Switching Specifications..........................60
5.2.6 Designing with radiated emissions in mind...........18
6.9 Human-machine interfaces (HMI)......................................64
5.2.7 Capacitance attributes..........................................18
6.9.1 TSI electrical specifications...................................64
5.3 Switching specifications.....................................................19
7 Dimensions...............................................................................65
5.3.1 Device clock specifications...................................19
7.1 Obtaining package dimensions.........................................65
5.3.2 General switching specifications...........................19
8 Pinout........................................................................................65
5.4 Thermal specifications.......................................................20
8.1 K20 Signal Multiplexing and Pin Assignments..................65
5.4.1 Thermal operating requirements...........................21
8.2 K20 Pinouts.......................................................................70
5.4.2 Thermal attributes.................................................21
9 Revision History........................................................................72
K20 Sub-Family Data Sheet, Rev. 2, 4/2012.
2
Freescale Semiconductor, Inc.