MCF5307CFT66B Freescale Semiconductor, MCF5307CFT66B Datasheet - Page 333

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MCF5307CFT66B

Manufacturer Part Number
MCF5307CFT66B
Description
IC MPU 32BIT 66MHZ COLDF 208FQFP
Manufacturer
Freescale Semiconductor
Series
MCF530xr
Datasheets

Specifications of MCF5307CFT66B

Core Processor
Coldfire V3
Core Size
32-Bit
Speed
66MHz
Connectivity
EBI/EMI, I²C, UART/USART
Peripherals
DMA, POR, WDT
Number Of I /o
16
Program Memory Type
ROMless
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
208-FQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MCF5307CFT66B
Manufacturer:
FREESCAL
Quantity:
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Part Number:
MCF5307CFT66B
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
When the receiver detects a high-to-low (mark-to-space) transition of the start bit on RxD,
the state of RxD is sampled each 16× clock for eight clocks, starting one-half clock after
the transition (asynchronous operation) or at the next rising edge of the bit time clock
(synchronous operation). If RxD is sampled high, the start bit is invalid and the search for
the valid start bit begins again.
If RxD is still low, a valid start bit is assumed and the receiver continues sampling the input
at one-bit time intervals, at the theoretical center of the bit, until the proper number of data
bits and parity, if any, is assembled and one stop bit is detected. Data on the RxD input is
sampled on the rising edge of the programmed clock source. The lsb is received first. The
data is then transferred to a receiver holding register and USRn[RxRDY] is set. If the
character is less than eight bits, the most significant unused bits in the receiver holding
register are cleared.
After the stop bit is detected, the receiver immediately looks for the next start bit. However,
if a non-zero character is received without a stop bit (framing error) and RxD remains low
for one-half of the bit period after the stop bit is sampled, the receiver operates as if a new
start bit were detected. Parity error, framing error, overrun error, and received break
conditions set the respective PE, FE, OE, RB error and break flags in the USRn at the
received character boundary and are valid only if USRn[RxRDY] is set.
If a break condition is detected (RxD is low for the entire character including the stop bit),
a character of all zeros is loaded into the receiver holding register (RHR) and
USRn[RB,RxRDY] are set. RxD must return to a high condition for at least one-half bit
time before a search for the next start bit begins.
USRn[RxRDY]
USRn[FFULL]
USRn[OE]
Receiver
Enabled
Overrun
internal
module
select
RTS
TxD
4
UOP0[RTS] = 1
Manually asserted first time,
automatically negated if overrun occurs
C1
Status
Freescale Semiconductor, Inc.
Data
(C1)
For More Information On This Product,
C2
Figure 14-22. Receiver Timing
Chapter 14. UART Modules
Go to: www.freescale.com
C3
C4
C5 will
be lost
C5
Status
Data
(C2)
C6
C6, C7, and C8 will be lost
Automatically asserted
when ready to receive
Status
(C3)
Data
Status
Data
(C4)
C7
Operation
command
Reset by
14-23
C8

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