MCF5282CVF80J Freescale Semiconductor, MCF5282CVF80J Datasheet - Page 402
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MCF5282CVF80J
Manufacturer Part Number
MCF5282CVF80J
Description
IC MPU 512K FLASH 256MAPBGA
Manufacturer
Freescale Semiconductor
Series
MCF528xr
Datasheet
1.MCF5216CVM66J.pdf
(766 pages)
Specifications of MCF5282CVF80J
Core Processor
Coldfire V2
Core Size
32-Bit
Speed
80MHz
Connectivity
CAN, EBI/EMI, Ethernet, I²C, SPI, UART/USART
Peripherals
DMA, LVD, POR, PWM, WDT
Number Of I /o
150
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
64K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
256-MAPBGA
Processor Series
MCF528x
Core
ColdFire V2
3rd Party Development Tools
JLINK-CF-BDM26, EWCF
Development Tools By Supplier
NNDK-MOD5282-KIT
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Lead Free Status / Rohs Status
No
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCF5282CVF80J
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
- Current page: 402 of 766
- Download datasheet (9Mb)
DMA Timers (DTIM0–DTIM3)
*[CE] = 00
*[OM] = 0
*[ORRI] = 0,
*[FRR] = 1,
*[CLK] = 10,
*[RST] = 0,
The simple example below uses Timer0 to count time-out loops. A time-out occurs when the reference
value, 0xAFAF, is reached.
timer0_ex
T0_LOOP
T0_FINISH
21.4.2
Equation 21-1
When calculating time-out periods, add one to the prescaler to simplify calculating, because
DTMRn[PS] equal to 0x00 yields a prescaler of one, and DTMRn[PS] equal to 0xFF yields a prescaler of
256.
21-10
Timeout period
move.w #0xFF0C,D0
move.w D0,TMR0
move.l #0x0000,D0;writing to the timer counter with any
move.l DO,TCN0 ;value resets it to zero
move.l #0xAFAF,DO ;set the timer0 reference to be
move.l #D0,TRR0 ;defined as 0xAFAF
clr.l DO
clr.l D1
clr.l D2
move.l #0x0000,D0
move.l D0,TCN0
move.b #0x03,D0
move.b D0,TER0
move.w TMR0,D0
bset #0,D0
move.w D0,TMR0
move.b TER0,D1
btst #1,D1
beq T0_LOOP
addi.l #1,D2
cmp.l #5,D2
beq T0_FINISH
move.b #0x02,D0
move.b D0,TER0
jmp T0_LOOP
HALT
Calculating Time-Out Values
determines time-out periods for various reference values:
disable capture event output
output=active-low pulse
disable ref. match output
restart mode enabled
internal bus clock/16
timer0 disabled
=
(
1 clock frequency
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
⁄
;reset the counter to 0x0000
;writing ones to TER0[REF,CAP]
;clears the event flags
;save the contents of TMR0 while setting
;the 0 bit. This enables timer 0 and starts counting
;load the value back into the register, setting TMR0[RST]
;load TER0 and see if
;TER0[REF] has been set
;Increment D2
;Did D2 reach 5? (i.e. timer ref has timed)
;If so, end timer0 example. Otherwise jump back.
;writing one to TER0[REF] clears the event flag
;End processing. Example is finished
)
×
(
1 or 16
)
×
(
DTMRn[PS]
+
1
)
×
(
DTRRn[REF]
Freescale Semiconductor
+
1
)
Eqn. 21-1
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