MCF5307AI90B Freescale Semiconductor, MCF5307AI90B Datasheet - Page 215
![IC MPU 32BIT COLDF 90MHZ 208FQFP](/photos/12/43/124330/mcf5307ai90b_sml.jpg)
MCF5307AI90B
Manufacturer Part Number
MCF5307AI90B
Description
IC MPU 32BIT COLDF 90MHZ 208FQFP
Manufacturer
Freescale Semiconductor
Series
MCF530xr
Datasheets
1.MCF5307AI66B.pdf
(484 pages)
2.MCF5307AI66B.pdf
(16 pages)
3.MCF5307AI66B.pdf
(2 pages)
Specifications of MCF5307AI90B
Core Processor
Coldfire V3
Core Size
32-Bit
Speed
90MHz
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
0°C ~ 70°C
Package / Case
208-FQFP
Maximum Clock Frequency
90 MHz
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
0 C
Family Name
MCF5xxx
Device Core
ColdFire
Device Core Size
32b
Frequency (max)
90MHz
Instruction Set Architecture
RISC
Supply Voltage 1 (typ)
3.3V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
208
Package Type
FQFP
Program Memory Size
8KB
Cpu Speed
90MHz
Embedded Interface Type
I2C, UART
Digital Ic Case Style
FQFP
No. Of Pins
208
Supply Voltage Range
3V To 3.6V
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCF5307AI90B
Manufacturer:
FREESCAL
Quantity:
153
Company:
Part Number:
MCF5307AI90B
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MCF5307AI90B
Manufacturer:
FREESCALE
Quantity:
20 000
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Freescale Semiconductor, Inc.
2
I
C Programming Examples
8.6.6 Slave Mode
In the slave interrupt service routine, the module addressed as slave bit (IAAS) should be
tested to check if a calling of its own address has just been received. If IAAS is set, software
should set the transmit/receive mode select bit (I2CR[MTX]) according to the I2SR[SRW].
Writing to the I2CR clears the IAAS automatically. The only time IAAS is read as set is
from the interrupt at the end of the address cycle where an address match occurred;
interrupts resulting from subsequent data transfers will have IAAS cleared. A data transfer
can now be initiated by writing information to I2DR for slave transmits, or read from I2DR
in slave-receive mode. A dummy read of I2DR in slave/receive mode releases SCL,
allowing the master to send data.
In the slave transmitter routine, I2SR[RXAK] must be tested before sending the next byte
of data. Setting RXAK means an end-of-data signal from the master receiver, after which
software must switch it from transmitter to receiver mode. Reading I2DR then releases SCL
so that the master can generate a STOP signal.
8.6.7 Arbitration Lost
If several devices try to engage the bus at the same time, one becomes master. Hardware
immediately switches devices that lose arbitration to slave receive mode. Data output to
SDA stops, but SCL is still generated until the end of the byte during which arbitration is
lost. An interrupt occurs at the falling edge of the ninth clock of this transfer with
I2SR[IAL] = 1 and I2CR[MSTA] = 0.
If a device that is not a master tries to transmit or do a START, hardware inhibits the
transmission, clears MSTA without signalling a STOP, generates an interrupt to the CPU,
and sets IAL to indicate a failed attempt to engage the bus. When considering these cases,
the slave service routine should first test IAL and software should clear it if it is set.
2
Chapter 8. I
C Module
8-13
For More Information On This Product,
Go to: www.freescale.com
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