Rev. 1.00
168
September 11, 2018
Rev. 1.00
169
September 11, 2018
HT45F4050
A/D NFC Flash MCU
HT45F4050
A/D NFC Flash MCU
Block Check Characteristic Bytes
• BCCn Byte (n=0~1)
Bit
7
6
5
4
3
2
1
0
Name
D7
D6
D5
D4
D3
D2
D1
D0
R/W
R
R
R
R
R
R
R
R
Default
x
x
x
x
x
x
x
x
"x": unknown
Bit 7~0
D7~D0
:
Block Check Character byte n
According to ISO/IEC 14443A, BCC0 is defined as CT SN0 SN1 SN2, and BCC1
is defined as SN3 SN
4
SN
5
SN6, where "CT" stands for Cascade Tag byte (88h),
SNn stands for Serial Number n stored in UIDn and " " stands for XOR operation.
The contents of these bytes are calculated by hardware. Due to security and system
requirements, these bytes are prohibited to be written to using the RF and MCU after
being fuse trimmed during IC production.
Lock Bytes
• SLOCK0 Byte
Bit
7
6
5
4
3
2
1
0
Name
L7
L6
L5
L4
LCC
BL15-10
BL9-4
BLCC
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
0
0
0
0
0
0
0
0
Bit 7~4
L7~L4
: Page 7~4 static lock bits
Page 7~4 can be individually locked by setting the corresponding lock bit L7~L4
to
"
1
" to prevent further write access. After being locked, the corresponding page
becomes read-only memory.
Bit 3
LCC
: Capability Container static lock bit
The Capability Container located in page 3 can be locked by setting the lock bit LCC
to
"
1
" to prevent further write access. After being locked, the page becomes read-only
memory.
Bit 2
BL15-10
: Page 15~10 block lock bit
If this bit is set to "
1
", the lock configuration for the corresponding memory area, i.e.,
the contents of bits L15~L10 in SLOCK1 can no longer be changed.
Bit 1
BL9-4
: Page 9~4 block lock bit
If this bit is set to "
1
", the lock configuration for the corresponding memory area, i.e.,
the contents of bits L9~L4 in SLOCK1 and SLOCK0 can no longer be changed.
Bit 0
BLCC
: Capability Container block lock bit
If this bit is set to "
1
", the lock configuration for the corresponding memory area, i.e.,
the contents of bit LCC in SLOCK0 can no longer be changed.
• SLOCK1 Byte
Bit
7
6
5
4
3
2
1
0
Name
L15
L14
L13
L12
L11
L10
L9
L8
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
0
0
0
0
0
0
0
0
Bit 7~0
L15~L8
: Page 15~8 static locking bits
Page 15~8 can be individually locked by setting the corresponding lock bit L15~L8
to
"
1
" to prevent further write access. After being locked, the corresponding page
becomes read-only memory.