MC9S08QG8CDTER Freescale, MC9S08QG8CDTER Datasheet - Page 58
MC9S08QG8CDTER
Manufacturer Part Number
MC9S08QG8CDTER
Description
Manufacturer
Freescale
Datasheet
1.MC9S08QG8CDTER.pdf
(314 pages)
Specifications of MC9S08QG8CDTER
Cpu Family
HCS08
Device Core Size
8b
Frequency (max)
20MHz
Interface Type
I2C/SCI/SPI
Total Internal Ram Size
512Byte
# I/os (max)
12
Number Of Timers - General Purpose
1
Operating Supply Voltage (typ)
2.5/3.3V
Operating Supply Voltage (max)
3.6V
Operating Supply Voltage (min)
1.8V
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
16
Package Type
TSSOP
Program Memory Type
Flash
Program Memory Size
8KB
Lead Free Status / RoHS Status
Compliant
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Chapter 4 Memory Map and Register Definition
4.7.3
4.7.4
During reset, the contents of the nonvolatile location NVPROT are copied from FLASH into FPROT. This
register can be read at any time. If FPDIS = 0, protection can be increased, i.e., a smaller value of FPS can
be written. If FPDIS = 1, writes do not change protection.
56
Background commands can be used to change the contents of these bits in FPROT.
KEYACC
Reset
Reset
Field
5
W
W
R
R
FLASH Configuration Register (FCNFG)
FLASH Protection Register (FPROT and NVPROT)
Enable Writing of Access Key — This bit enables writing of the backdoor comparison key. For more detailed
information about the backdoor key mechanism, refer to
0 Writes to 0xFFB0–0xFFB7 are interpreted as the start of a FLASH programming or erase command.
1 Writes to NVBACKKEY (0xFFB0–0xFFB7) are interpreted as comparison key writes.
0
0
7
7
= Unimplemented or Reserved
0
0
6
6
Figure 4-7. FLASH Configuration Register (FCNFG)
1
This register is loaded from nonvolatile location NVPROT during reset.
Figure 4-8. FLASH Protection Register (FPROT)
Table 4-10. FCNFG Register Field Descriptions
SEC01:SEC00 changes to 1:0 after successful backdoor
key entry or a successful blank check of FLASH.
MC9S08QG8 and MC9S08QG4 Data Sheet, Rev. 5
SEC01:SEC00
KEYACC
0
5
5
0:0
0:1
1:0
1:1
Table 4-9. Security States
FPS
0
0
4
4
(1)
Description
Section 4.6,
Description
unsecured
secure
secure
secure
3
0
0
3
1
“Security.”
0
0
2
2
Freescale Semiconductor
0
0
1
1
FPDIS
0
0
0
0
(1)
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