MC9S12XET256CAG Freescale Semiconductor, MC9S12XET256CAG Datasheet - Page 1121

• Manufacturer Part Number: MC9S12XET256CAG
• Description: MCU 16BIT 256K FLASH 144-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12XET256CAG

• Core Processor: HCS12X
• Core Size: 16-Bit
• Speed: 50MHz
• Connectivity: CAN, EBI/EMI, I²C, IrDA, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 119
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.72 V ~ 5.5 V
• Data Converters: A/D 24x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• Processor Series: S12XE
• Core: HCS12
• 3rd Party Development Tools: EWHCS12
• Development Tools By Supplier: KIT33812ECUEVME, EVB9S12XEP100, DEMO9S12XEP100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

28.4.2.7
The Program Once command restricts programming to a reserved 64 byte field (8 phrases) in the
nonvolatile information register located in P-Flash block 0. The Program Once reserved field can be read
using the Read Once command as described in
be issued once since the nonvolatile information register in P-Flash block 0 cannot be erased. The Program
Once command must not be executed from the Flash block containing the Program Once reserved field to
avoid code runaway.
Upon clearing CCIF to launch the Program Once command, the Memory Controller first verifies that the
selected phrase is erased. If erased, then the selected phrase will be programmed and then verified with
read back. The CCIF flag will remain clear, setting only after the Program Once operation has completed.
The reserved nonvolatile information register accessed by the Program Once command cannot be erased
and any attempt to program one of these phrases a second time will not be allowed. Valid phrase index
Freescale Semiconductor
1. As defined by the memory map for FTM1024K5.
FERSTAT
Register
FSTAT
Program Once Command
CCOBIX[2:0]
MGSTAT1
MGSTAT0
EPVIOLIF
ACCERR
Error Bit
Table 28-45. Program Once Command FCCOB Requirements
FPVIOL
000
001
010
011
100
101
Table 28-44. Program P-Flash Command Error Handling
MC9S12XE-Family Reference Manual , Rev. 1.23
Set if CCOBIX[2:0] != 101 at command launch
Set if command not available in current mode (see
Set if an invalid global address [22:0] is supplied
Set if a misaligned phrase address is supplied (global address [2:0] != 000)
Set if a Load Data Field command sequence is currently active and the selected
block has previously been selected in the same command sequence
Set if a Load Data Field command sequence is currently active and global
address [17:0] does not match that previously supplied in the same command
sequence
Set if the global address [22:0] points to a protected area
Set if any errors have been encountered during the verify operation
Set if any non-correctable errors have been encountered during the verify
operation
None
Program Once phrase index (0x0000 - 0x0007)
0x07
Section
Program Once word 0 value
Program Once word 1 value
Program Once word 2 value
Program Once word 3 value
FCCOB Parameters
28.4.2.4. The Program Once command must only
Error Condition
Chapter 28 768 KByte Flash Module (S12XFTM768K4V2)
Not Required
(1)
Table
28-30)
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