Datasheet

MCF51AC256 ColdFire Microcontroller Data Sheet, Rev.7
Freescale Semiconductor2
Table of Contents
1 MCF51AC256 Family Configurations . . . . . . . . . . . . . . . . . . . .3
1.1 Device Comparison. . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.2 Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
1.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.3.1 Feature List . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
1.4 Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
1.5 Pinouts and Packaging . . . . . . . . . . . . . . . . . . . . . . . . .12
2 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
2.1 Parameter Classification . . . . . . . . . . . . . . . . . . . . . . . .17
2.2 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . .17
2.3 Thermal Characteristics . . . . . . . . . . . . . . . . . . . . . . . .18
2.4 Electrostatic Discharge (ESD) Protection Characteristics
19
2.5 DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
2.6 Supply Current Characteristics . . . . . . . . . . . . . . . . . . .25
2.7 Analog Comparator (ACMP) Electricals . . . . . . . . . . . .27
2.8 ADC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . .28
2.9 External Oscillator (XOSC) Characteristics . . . . . . . . .31
2.10 MCG Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .32
2.11 AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
2.11.1 Control Timing . . . . . . . . . . . . . . . . . . . . . . . . . .34
2.11.2 Timer (TPM/FTM) Module Timing . . . . . . . . . . .35
2.11.3 MSCAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
2.12 SPI Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
2.13 Flash Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .38
2.14 EMC Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
2.14.1 Radiated Emissions. . . . . . . . . . . . . . . . . . . . . .39
3 Mechanical Outline Drawings . . . . . . . . . . . . . . . . . . . . . . . . .40
4 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
List of Figures
Figure 1.MCF51AC256 Series Block Diagram . . . . . . . . . . . . . . 5
Figure 2.MCF51AC256 Series ColdFire Microcontroller
80-Pin LQFP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 3.MCF51AC256 Series ColdFire Microcontroller
64-Pin QFP/LQFP. . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 4.MCF51AC256 Series ColdFire Microcontroller
44-Pin LQFP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 5.Typical I
OH
vs. V
DD
–V
OH
at V
DD
= 3 V
(Low Drive, PTxDSn = 0) . . . . . . . . . . . . . . . . . . . . . . 22
Figure 6.Typical I
OH
vs. V
DD
–V
OH
at V
DD
= 3 V
(High Drive, PTxDSn = 1) . . . . . . . . . . . . . . . . . . . . . . 23
Figure 7.Typical I
OH
vs. V
DD
–V
OH
at V
DD
= 5 V
(Low Drive, PTxDSn = 0) . . . . . . . . . . . . . . . . . . . . . . 23
Figure 8.Typical I
OH
vs. V
DD
–V
OH
at V
DD
= 5 V
(High Drive, PTxDSn = 1) . . . . . . . . . . . . . . . . . . . . . . 24
Figure 9.Typical Run IDD vs. System Clock Freq.
for FEI and FBE Modes . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 10.ADC Input Impedance Equivalency Diagram. . . . . . . 29
Figure 11.Reset Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 12.IRQ/KBIPx Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 13.Timer External Clock . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 14.Timer Input Capture Pulse . . . . . . . . . . . . . . . . . . . . . 35
Figure 15.SPI Master Timing (CPHA = 0) . . . . . . . . . . . . . . . . . 37
Figure 16.SPI Master Timing (CPHA =1) . . . . . . . . . . . . . . . . . . 37
Figure 17.SPI Slave Timing (CPHA = 0) . . . . . . . . . . . . . . . . . . 38
Figure 18.SPI Slave Timing (CPHA = 1) . . . . . . . . . . . . . . . . . . 38
List of Tables
Table 1. MCF51AC256 Series Device Comparison . . . . . . . . . . 3
Table 2. MCF51AC256 Series Functional Units . . . . . . . . . . . . . 6
Table 3. Orderable Part Number Summary. . . . . . . . . . . . . . . . 10
Table 4. Pin Availability by Package Pin-Count . . . . . . . . . . . . . 14
Table 5. Parameter Classifications . . . . . . . . . . . . . . . . . . . . . . 17
Table 6. Absolute Maximum Ratings. . . . . . . . . . . . . . . . . . . . . 18
Table 7. Thermal Characteristics. . . . . . . . . . . . . . . . . . . . . . . . 18
Table 8. ESD and Latch-up Test Conditions . . . . . . . . . . . . . . . 20
Table 9. ESD and Latch-Up Protection Characteristics. . . . . . . 20
Table 10.DC Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 11. Supply Current Characteristics. . . . . . . . . . . . . . . . . . 25
Table 12.Analog Comparator Electrical Specifications. . . . . . . . 27
Table 13.5 Volt 12-bit ADC Operating Conditions . . . . . . . . . . . 28
Table 14.5 Volt 12-bit ADC Characteristics
(V
REFH
= V
DDA
, V
REFL
= V
SSA
) . . . . . . . . . . . . . . . . . . 29
Table 15.Oscillator Electrical Specifications
(Temperature Range = –40 to 105 C Ambient) . . . . . 31
Table 16.MCG Frequency Specifications
(Temperature Range = –40 to 105 C Ambient) . . . . . 32
Table 17.Control Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 18.TPM/FTM Input Timing . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 19.MSCAN Wake-Up Pulse Characteristics . . . . . . . . . . . 35
Table 20.SPI Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Table 21.Flash Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 22.Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 23.Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41