S912XET512J3VALR Freescale Semiconductor, S912XET512J3VALR Datasheet - Page 870

• Manufacturer Part Number: S912XET512J3VALR
• Description: 16-bit Microcontrollers - MCU 16 BIT,512K FLASH
• Manufacturer: Freescale Semiconductor

Specifications of S912XET512J3VALR

• Rohs: yes
• Core: HCS12X
• Processor Series: MC9S12XE
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 512 KB
• Data Ram Size: 32 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3.13 V to 5.5 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: LQFP-112
• Mounting Style: SMD/SMT

Chapter 24 128 KByte Flash Module (S12XFTM128K2V1)
24.4.2.4
The Read Once command provides read access to a reserved 64 byte field (8 phrases) located in the
nonvolatile information register of P-Flash block 0. The Read Once field is programmed using the
Program Once command described in
from the Flash block containing the Program Once reserved field to avoid code runaway.
Upon clearing CCIF to launch the Read Once command, a Read Once phrase is fetched and stored in the
FCCOB indexed register. The CCIF flag will set after the Read Once operation has completed. Valid
phrase index values for the Read Once command range from 0x0000 to 0x0007. During execution of the
Read Once command, any attempt to read addresses within P-Flash block 0 will return invalid data.
24.4.2.5
The Program P-Flash operation will program a previously erased phrase in the P-Flash memory using an
embedded algorithm.
870
128
1. As defined by the memory map for FTM256K2.
2. As found in the memory map for FTM256K2.
FERSTAT
Register
FSTAT
Read Once Command
Program P-Flash Command
CCOBIX[2:0]
MGSTAT1
MGSTAT0
EPVIOLIF
ACCERR
Error Bit
FPVIOL
Table 24-39. Read Once Command FCCOB Requirements
000
001
010
011
100
101
Table 24-40. Read Once Command Error Handling
MC9S12XE-Family Reference Manual Rev. 1.25
Set if CCOBIX[2:0] != 001 at command launch
Set if command not available in current mode (see
Set if an invalid phrase index is supplied
None
Set if any errors have been encountered during the read
Set if any non-correctable errors have been encountered during the read
None
Section
Read Once phrase index (0x0000 - 0x0007)
0x04
24.4.2.6. The Read Once command must not be executed
Read Once word 0 value
Read Once word 1 value
Read Once word 2 value
Read Once word 3 value
FCCOB Parameters
Error Condition
Not Required
Table
24-30)
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