MC9S12E256MFUE Freescale Semiconductor, MC9S12E256MFUE Datasheet - Page 96

• Manufacturer Part Number: MC9S12E256MFUE
• Description: IC MCU 256K FLASH 25MHZ 80-QFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12E256MFUE

• Core Processor: HCS12
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: EBI/EMI, I²C, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 60
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2.35 V ~ 2.75 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 80-QFP
• Processor Series: S12E
• Core: HCS12
• Data Bus Width: 16 bit
• Data Ram Size: 16 KB
• Interface Type: I2C/SCI/SPI
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 60
• Number Of Timers: 12
• Operating Supply Voltage: 0 V to 5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWHCS12
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 16-ch x 10-bit
• On-chip Dac: 2-ch x 8-bit
• Controller Family/series: HCS12/S12X
• No. Of I/o's: 60
• Ram Memory Size: 16KB
• Cpu Speed: 25MHz
• No. Of Timers: 3
• Embedded Interface Type: I2C, SCI, SPI
• Rohs Compliant: Yes
• For Use With: M68EVB912E128 - BOARD EVAL FOR MC9S12E128/64
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Chapter 2 256 Kbyte Flash Module (FTS256K2V1)
2.3.2.6
The general guideline is that Flash protection can only be added and not removed.
valid transitions between Flash protection scenarios. Any attempt to write an invalid scenario to the
FPROT register will be ignored and the FPROT register will remain unchanged. The contents of the
FPROT register reflect the active protection scenario. See the FPHS and FPLS descriptions for additional
restrictions.
2.3.2.7
The banked FSTAT register defines the operational status of the module.
96
Reset
Reset
W
W
R
R
CBEIF
CBEIF
Flash Protection Restrictions
Flash Status Register (FSTAT)
7
1
7
1
1
Allowed transitions marked with X.
Protection
Scenario
From
= Unimplemented or Reserved
= Unimplemented or Reserved
0
1
2
3
4
5
6
7
Figure 2-11. Flash Status Register (FSTAT — Special Mode)
Figure 2-10. Flash Status Register (FSTAT — Normal Mode)
CCIF
CCIF
6
1
6
1
Table 2-15. Flash Protection Scenario Transitions
X
X
0
PVIOL
PVIOL
MC9S12E256 Data Sheet, Rev. 1.08
5
0
5
0
1
X
X
X
X
ACCERR
ACCERR
X
X
X
X
2
To Protection Scenario
4
0
4
0
X
X
X
X
X
X
X
X
3
3
0
0
3
0
0
X
X
X
X
4
1
5
X
X
BLANK
BLANK
2
0
2
0
X
X
6
Table 2-15
Freescale Semiconductor
FAIL
X
7
1
0
0
1
0
specifies all
0
0
0
0
0
0