MC9S12DT256MPVE Freescale Semiconductor, MC9S12DT256MPVE Datasheet - Page 416
MC9S12DT256MPVE
Manufacturer Part Number
MC9S12DT256MPVE
Description
IC MCU 256K FLASH 25MHZ 112-LQFP
Manufacturer
Freescale Semiconductor
Series
HCS12r
Datasheet
1.S912XDG128F2MAL.pdf
(1348 pages)
Specifications of MC9S12DT256MPVE
Core Processor
HCS12
Core Size
16-Bit
Speed
25MHz
Connectivity
CAN, I²C, SCI, SPI
Peripherals
PWM, WDT
Number Of I /o
91
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
12K x 8
Voltage - Supply (vcc/vdd)
2.35 V ~ 5.25 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
112-LQFP
Processor Series
S12D
Core
HCS12
Data Bus Width
16 bit
Data Ram Size
12 KB
Interface Type
CAN/I2C/SCI/SPI
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
91
Number Of Timers
1
Operating Supply Voltage
5 V to 2.5 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWHCS12
Development Tools By Supplier
M68KIT912DP256
Minimum Operating Temperature
- 40 C
On-chip Adc
2 (8-ch x 10-bit)
No. Of I/o's
91
Eeprom Memory Size
4KB
Ram Memory Size
12KB
Cpu Speed
25MHz
No. Of Timers
1
No. Of Pwm Channels
8
Digital Ic Case Style
LQFP
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC9S12DT256MPVE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Chapter 9 Inter-Integrated Circuit (IICV2) Block Description
In slave transmitter routine, the received acknowledge bit (RXAK) must be tested before transmitting the
next byte of data. Setting RXAK means an 'end of data' signal from the master receiver, after which it must
be switched from transmitter mode to receiver mode by software. A dummy read then releases the SCL
line so that the master can generate a STOP signal.
9.7.1.7
Arbitration Lost
If several masters try to engage the bus simultaneously, only one master wins and the others lose
arbitration. The devices which lost arbitration are immediately switched to slave receive mode by the
hardware. Their data output to the SDA line is stopped, but SCL continues to be generated until the end of
the byte during which arbitration was lost. An interrupt occurs at the falling edge of the ninth clock of this
transfer with IBAL=1 and MS/SL=0. If one master attempts to start transmission while the bus is being
engaged by another master, the hardware will inhibit the transmission; switch the MS/SL bit from 1 to 0
without generating STOP condition; generate an interrupt to CPU and set the IBAL to indicate that the
attempt to engage the bus is failed. When considering these cases, the slave service routine should test the
IBAL first and the software should clear the IBAL bit if it is set.
MC9S12XDP512 Data Sheet, Rev. 2.21
416
Freescale Semiconductor
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