S9S08SG8E2VTG Freescale Semiconductor, S9S08SG8E2VTG Datasheet - Page 51

• Manufacturer Part Number: S9S08SG8E2VTG
• Description: 8-bit Microcontrollers - MCU 9S08 UC W/ 8K 0.25UM SGF
• Manufacturer: Freescale Semiconductor

Specifications of S9S08SG8E2VTG

• Rohs: yes
• Core: S08
• Processor Series: MC9S08SG8
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 40 MHz
• Program Memory Size: 8 KB
• Data Ram Size: 8 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 2.7 V to 5.5 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: TSSOP-16
• Mounting Style: SMD/SMT
• A/d Bit Size: 10 bit
• A/d Channels Available: 12
• Interface Type: SCI, SPI
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 16
• Number Of Timers: 2
• Program Memory Type: Flash
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 2.7 V

0xFFAE
0xFFAF
0xFFB0 –
0xFFB7
0xFFB8 –
0xFFBC
0xFFBD
0xFFBE
0xFFBF
Nonvolatile FLASH registers, shown in
include an 8-byte backdoor key, NVBACKKEY, which can be used to gain access to secure memory
resources. During reset events, the contents of NVPROT and NVOPT in the nonvolatile register area of
the FLASH memory are transferred into corresponding FPROT and FOPT working registers in the
high-page registers to control security and block protection options.
Provided the key enable (KEYEN) bit is 1, the 8-byte comparison key can be used to temporarily
disengage memory security. This key mechanism can be accessed only through user code running in secure
memory. (A security key cannot be entered directly through background debug commands.) This security
key can be disabled completely by programming the KEYEN bit to 0. If the security key is disabled, the
only way to disengage security is by mass erasing the FLASH if needed (normally through the background
debug interface) and verifying that FLASH is blank. To avoid returning to secure mode after the next reset,
program the security bits (SEC) to the unsecured state (1:0).
Freescale Semiconductor
Address
Reserved for 
storage of FTRIM
Reserved for 
storage of ICSTRM
NVBACKKEY
Reserved
NVPROT
Reserved
NVOPT
Register Name
KEYEN
Bit 7
—
—
—
—
Table 4-4. Nonvolatile Register Summary
MC9S08SG8 MCU Series Data Sheet, Rev. 7
FNORED
—
—
—
—
6
Table
4-4, are located in the FLASH memory. These registers
—
—
—
—
—
5
8-Byte Comparison Key
FPS
—
—
—
—
—
4
TRIM
—
—
—
—
—
3
—
—
—
—
—
2
—
—
—
—
1
Chapter 4 Memory
SEC
FTRIM
FPDIS
Bit 0
—
—
—
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