MC9S08DV32MLF Freescale Semiconductor, MC9S08DV32MLF Datasheet - Page 62
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MC9S08DV32MLF
Manufacturer Part Number
MC9S08DV32MLF
Description
IC MCU 32K FLASH 2K RAM 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HCS08r
Specifications of MC9S08DV32MLF
Core Processor
HCS08
Core Size
8-Bit
Speed
40MHz
Connectivity
CAN, I²C, LIN, SCI, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
39
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 16x12b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC9S08DV32MLF
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Chapter 4 Memory
4.5.10.2
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.
62
FNORED
Reset
KEYEN
Field
SEC
1:0
7
6
W
R
KEYEN
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. SEC changes to 1:0 after successful backdoor key
entry or a successful blank check of Flash. For more detailed information about security, refer to
“Security.”
Flash Options Register (FOPT and NVOPT)
F
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
F
6
1
0
0
0
0
0
0
0
Table 4-9. FOPT Register Field Descriptions
Figure 4-6. Flash Options Register (FOPT)
Table 4-8. Flash Clock Divider Settings
Reserved
MC9S08DV60 Series Data Sheet, Rev 3
(Decimal)
F
5
DIV
12
49
39
19
9
4
0
0
0
0
4
192.3 kHz
200 kHz
200 kHz
200 kHz
200 kHz
200 kHz
200 kHz
150 kHz
f
FCLK
Description
F = loaded from nonvolatile location NVOPT during reset
Section 4.5.9,
3
0
0
Program/Erase Timing Pulse
(5 μs Min, 6.7 μs Max)
“Security.”
5.2 μs
6.7 μs
5 μs
5 μs
5 μs
5 μs
5 μs
5 μs
0
0
2
Freescale Semiconductor
F
1
Table
SEC
Section 4.5.9,
4-10. When
F
0
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