MCF51AC256BCLKER Freescale Semiconductor, MCF51AC256BCLKER Datasheet - Page 33

• Manufacturer Part Number: MCF51AC256BCLKER
• Description: MCU 32BIT 256K FLASH 80-LQFP
• Manufacturer: Freescale Semiconductor
• Series: MCF51ACr

Specifications of MCF51AC256BCLKER

• Core Processor: Coldfire V1
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LVD, PWM, WDT
• Number Of I /o: 69
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 24x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

2.11.2
Synchronizer circuits determine the shortest input pulses that can be recognized or the fastest clock that
can be used as the optional external source to the timer counter. These synchronizers operate from the
current bus rate clock.
2.11.3
Freescale Semiconductor
1
Num
Typical values are based on characterization data at V
1
2
NUM
1
2
3
4
5
C
D
D
Timer (TPM/FTM) Module Timing
MSCAN
MSCAN wake-up dominant pulse filtered
MSCAN wake-up dominant pulse pass
—
—
C
D
D
D
External clock frequency
External clock period
External clock high time
External clock low time
Input capture pulse width
TPMxCLK
MCF51AC256 ColdFire Microcontroller Data Sheet, Rev.6
Parameter
Table 19. MSCAN Wake-Up Pulse Characteristics
TPMxCHn
TPMxCHn
Figure 13. Timer Input Capture Pulse
Function
Table 18. TPM/FTM Input Timing
Figure 12. Timer External Clock
t
clkh
DD
= 5.0 V, 25 C unless otherwise stated.
t
t
ICPW
ICPW
t
TPMext
Symbol
t
t
WUP
WUP
Symbol
f
t
TPMext
TPMext
t
t
ICPW
t
clkh
clkl
t
clkl
Min
—
5
Min
DC
1.5
1.5
1.5
4
Typical
—
—
1
Electrical Characteristics
f
Max
Bus
—
—
—
—
/4
Max
2
5
MHz
Unit
t
t
t
t
cyc
cyc
cyc
cyc
Unit
s
s
33