MC9S12XA512CAG Freescale Semiconductor, MC9S12XA512CAG Datasheet - Page 455
MC9S12XA512CAG
Manufacturer Part Number
MC9S12XA512CAG
Description
IC MCU 512K FLASH 144-LQFP
Manufacturer
Freescale Semiconductor
Series
HCS12r
Specifications of MC9S12XA512CAG
Core Processor
HCS12X
Core Size
16-Bit
Speed
80MHz
Connectivity
EBI/EMI, I²C, IrDA, LIN, SCI, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
119
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
2.35 V ~ 5.5 V
Data Converters
A/D 24x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
144-LQFP
Processor Series
S12XA
Core
HCS12
Data Bus Width
16 bit
Data Ram Size
32 KB
Interface Type
CAN, I2C, SCI, SPI
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
119
Number Of Timers
12
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWHCS12
Development Tools By Supplier
EVB9S12XDP512E
Minimum Operating Temperature
- 40 C
On-chip Adc
2 (10 bit, 24 Channel)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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10.3.3.4
This register defines the local priority of the associated message buffer. The local priority is used for the
internal prioritization process of the MSCAN and is defined to be highest for the smallest binary number.
The MSCAN implements the following internal prioritization mechanisms:
In cases of more than one buffer having the same lowest priority, the message buffer with the lower index
number wins.
Read: Anytime when TXEx flag is set (see
(CANTFLG)”) and the corresponding transmit buffer is selected in CANTBSEL (see
“MSCAN Transmit Buffer Selection Register
Write: Anytime when TXEx flag is set (see
(CANTFLG)”) and the corresponding transmit buffer is selected in CANTBSEL (see
“MSCAN Transmit Buffer Selection Register
10.3.3.5
If the TIME bit is enabled, the MSCAN will write a time stamp to the respective registers in the active
transmit or receive buffer right after the EOF of a valid message on the CAN bus (see
Freescale Semiconductor
•
•
Reset:
All transmission buffers with a cleared TXEx flag participate in the prioritization immediately
before the SOF (start of frame) is sent.
The transmission buffer with the lowest local priority field wins the prioritization.
W
R
Transmit Buffer Priority Register (TBPR)
Time Stamp Register (TSRH–TSRL)
PRIO7
0
7
DLC3
0
0
0
0
0
0
0
0
1
Figure 10-36. Transmit Buffer Priority Register (TBPR)
PRIO6
0
6
DLC2
MC9S12XDP512 Data Sheet, Rev. 2.21
0
0
0
0
1
1
1
1
0
Table 10-33. Data Length Codes
Data Length Code
PRIO5
0
5
Section 10.3.2.7, “MSCAN Transmitter Flag Register
Section 10.3.2.7, “MSCAN Transmitter Flag Register
(CANTBSEL)”).
(CANTBSEL)”).
Chapter 10 Freescale’s Scalable Controller Area Network (S12MSCANV3)
PRIO4
DLC1
0
4
0
0
1
1
0
0
1
1
0
PRIO3
3
0
DLC0
0
1
0
1
0
1
0
1
0
PRIO2
0
2
Data Byte
Count
PRIO1
0
1
2
3
4
5
6
7
8
Section 10.3.2.11,
Section 10.3.2.11,
Section 10.3.2.1,
0
1
PRIO0
0
0
455
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