S9S08SG8E2VTJR Freescale Semiconductor, S9S08SG8E2VTJR Datasheet - Page 63

• Manufacturer Part Number: S9S08SG8E2VTJR
• Description: 8-bit Microcontrollers - MCU 9S08 UC W/ 8K 0.25UM SGF
• Manufacturer: Freescale Semiconductor

Specifications of S9S08SG8E2VTJR

• Rohs: yes
• Core: HCS08
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 40 MHz
• Program Memory Size: 8 KB
• Data Ram Size: 512 B
• On-chip Adc: Yes
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: TSSOP-20
• Mounting Style: SMD/SMT
• A/d Bit Size: 10 bit
• A/d Channels Available: 12
• Interface Type: I2C, SCI, SPI
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 16
• Number Of Timers: 3
• Program Memory Type: Flash
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 2.7 V

4.7.2
During reset, the contents of the nonvolatile location NVOPT are copied from FLASH into FOPT. To
change the value in this register, erase and reprogram the NVOPT location in FLASH memory as usual
and then issue a new MCU reset.
Freescale Semiconductor
SEC0[1:0]
FNORED
Reset
KEYEN
Field
1:0
7
6
W
R
KEYEN
FLASH Options Register (FOPT and NVOPT)
Backdoor Key Mechanism Enable — When this bit is 0, the backdoor key mechanism cannot be used to
disengage security. The backdoor key mechanism is accessible only from user (secured) firmware. BDM
commands cannot be used to write key comparison values that would unlock the backdoor key. For more detailed
information about the backdoor key mechanism, refer to
0 No backdoor key access allowed.
1 If user firmware writes an 8-byte value that matches the nonvolatile backdoor key (NVBACKKEY through
Vector Redirection Disable — When this bit is 1, then vector redirection is disabled.
0 Vector redirection enabled.
1 Vector redirection disabled.
Security State Code — This 2-bit field determines the security state of the MCU as shown in
the MCU is secure, the contents of RAM and FLASH memory cannot be accessed by instructions from any
unsecured source including the background debug interface. SEC01:SEC00 changes to 1:0 after successful
backdoor key entry or a successful blank check of FLASH.
For more detailed information about security, refer to
7
200 kHz
150 kHz
NVBACKKEY+7 in that order), security is temporarily disengaged until the next MCU reset.
20 MHz
10 MHz
8 MHz
4 MHz
2 MHz
1 MHz
f
Bus
= Unimplemented or Reserved
FNORED
(Binary)
PRDIV8
6
1
0
0
0
0
0
0
0
This register is loaded from nonvolatile location NVOPT during reset.
Table 4-8. FOPT Register Field Descriptions
Figure 4-6. FLASH Options Register (FOPT)
Table 4-7. FLASH Clock Divider Settings
(Decimal)
0
5
MC9S08SG32 Data Sheet, Rev. 8
DIV
12
49
39
19
9
4
0
0
0
4
192.3 kHz
200 kHz
200 kHz
200 kHz
200 kHz
200 kHz
200 kHz
150 kHz
f
FCLK
Description
Section 4.6,
Section 4.6,
3
0
Program/Erase Timing Pulse
(5 μs Min, 6.7 μs Max)
“Security.”
“Security.”
5.2 μs
6.7 μs
5 μs
5 μs
5 μs
5 μs
5 μs
5 μs
0
2
SEC01
1
Table
Chapter 4 Memory
4-9. When
SEC00
0
57