MC9S12DT256MPVE Freescale Semiconductor, MC9S12DT256MPVE Datasheet - Page 534
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 12 Serial Peripheral Interface (S12SPIV4)
The SS line can remain active low between successive transfers (can be tied low at all times). This format
is sometimes preferred in systems having a single fixed master and a single slave that drive the MISO data
line.
The SPI interrupt request flag (SPIF) is common to both the master and slave modes. SPIF gets set one
half SCK cycle after the last SCK edge.
534
•
End of Idle State
SCK Edge Number
SCK (CPOL = 0)
SCK (CPOL = 1)
SAMPLE I
MOSI/MISO
CHANGE O
CHANGE O
SEL SS (O)
Master only
SEL SS (I)
MOSI pin
MISO pin
Back-to-back transfers in master mode
In master mode, if a transmission has completed and a new data byte is available in the SPI data
register, this byte is sent out immediately without a trailing and minimum idle time.
MSB first (LSBFE = 0):
t
t
t
LSB first (LSBFE = 1):
L
T
I
= Minimum idling time between transfers (minimum SS high time), not required for back-to-back transfers
= Minimum leading time before the first SCK edge, not required for back-to-back transfers
= Minimum trailing time after the last SCK edge
t
L
1
MSB
LSB
2
Figure 12-12. SPI Clock Format 1 (CPHA = 1)
3
Begin
Bit 6
Bit 1
4
MC9S12XDP512 Data Sheet, Rev. 2.21
5
Bit 5
Bit 2
6
7
Bit 4
Bit 3
8
Transfer
9
Bit 3
Bit 4
10
11
Bit 2
Bit 5
12
13 14
Bit 1
Bit 6
End
15
MSB
LSB
16
t
T
Minimum 1/2 SCK
Freescale Semiconductor
Begin of Idle State
t
I
for t
T
t
L
, t
l
, t
L
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