MC9S12C128VFU Freescale Semiconductor, MC9S12C128VFU Datasheet - Page 585

MC9S12C128VFU

Manufacturer Part Number
MC9S12C128VFU
Description
Manufacturer
Freescale Semiconductor
Datasheet

Specifications of MC9S12C128VFU

Cpu Family
HCS12
Device Core Size
16b
Frequency (max)
25MHz
Interface Type
CAN/SCI/SPI
Program Memory Type
Flash
Program Memory Size
128KB
Total Internal Ram Size
4KB
# I/os (max)
60
Number Of Timers - General Purpose
8
Operating Supply Voltage (typ)
2.5/5V
Operating Supply Voltage (max)
2.75/5.5V
Operating Supply Voltage (min)
2.35/2.97V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 105C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
80
Package Type
PQFP
Lead Free Status / Rohs Status
Not Compliant

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The security function in the Flash module is described in
20.3.2.3
This register is reserved for factory testing and is not accessible to the user.
All bits read 0 and are not writable.
Freescale Semiconductor
Module Base + 0x0002
KEYEN[1:0]
SEC[1:0]
NV[5:2]
Reset
Field
7–6
5–2
1–0
W
R
Backdoor Key Security Enable Bits — The KEYEN[1:0] bits define the enabling of the backdoor key access
to the Flash module as shown in
Nonvolatile Flag Bits — The NV[5:2] bits are available to the user as nonvolatile flags.
Flash Security Bits — The SEC[1:0] bits define the security state of the MCU as shown in
Flash module is unsecured using backdoor key access, the SEC[1:0] bits are forced to 1:0.
RESERVED1
0
0
7
= Unimplemented or Reserved
0
0
6
1. Preferred KEYEN state to disable Backdoor Key Access.
1. Preferred SEC state to set MCU to secured state.
KEYEN[1:0]
SEC[1:0]
01
01
00
10
11
00
10
11
Table 20-5. FSEC Field Descriptions
(1)
(1)
Table 20-7. Flash Security States
MC9S12C-Family / MC9S12GC-Family
Table 20-6. Flash KEYEN States
0
0
5
Table
Figure 20-8. RESERVED1
20-6.
Status of Backdoor Key Access
Rev 01.24
0
0
4
Status of Security
Description
Unsecured
Secured
Secured
Secured
DISABLED
DISABLED
DISABLED
ENABLED
Section 20.4.3, “Flash Module
0
0
3
Chapter 20 96 Kbyte Flash Module (S12FTS96KV1)
0
0
2
0
0
1
Table
Security”.
20-7. If the
0
0
0
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