MC9S08GT60ACFDE Freescale, MC9S08GT60ACFDE Datasheet - Page 59
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MC9S08GT60ACFDE
Manufacturer Part Number
MC9S08GT60ACFDE
Description
Manufacturer
Freescale
Datasheet
1.MC9S08GT60ACFDE.pdf
(302 pages)
Specifications of MC9S08GT60ACFDE
Cpu Family
HCS08
Device Core Size
8b
Frequency (max)
40MHz
Interface Type
I2C/SCI/SPI
Total Internal Ram Size
4KB
# I/os (max)
39
Number Of Timers - General Purpose
4
Operating Supply Voltage (typ)
2.5/3.3V
Operating Supply Voltage (max)
3.6V
Operating Supply Voltage (min)
1.8/2.08V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
48
Package Type
QFN EP
Program Memory Type
Flash
Program Memory Size
60KB
Lead Free Status / RoHS Status
Compliant
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4.6.2
During reset, the contents of the nonvolatile location NVOPT are copied from flash into FOPT. Bits 5
through 2 are not used and always read 0. This register may be read at any time, but writes have no meaning
or effect. 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, 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 below. When 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. For more detailed information about security, refer to
Section 4.5,
00 Secure
01 Secure
10 Unsecured
11 Secure
SEC0[1:0] changes to 10 after successful backdoor key entry or a successful blank check of flash.
7
NVBACKKEY+7, in that order), security is temporarily disengaged until the next MCU reset.
= Unimplemented or Reserved
FNORED
“Security.”
6
This register is loaded from nonvolatile location NVOPT during reset.
Figure 4-5. Flash Options Register (FOPT)
Table 4-8. FOPT Field Descriptions
MC9S08GB60A Data Sheet, Rev. 2
0
5
0
4
Description
Section 4.5,
0
3
“Security.”
0
2
SEC01
1
Chapter 4 Memory
SEC00
0
59
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