C8051F960-A-GQ Silicon Labs, C8051F960-A-GQ Datasheet - Page 179
C8051F960-A-GQ
Manufacturer Part Number
C8051F960-A-GQ
Description
8-bit Microcontrollers - MCU 128KB DC-DC LCD AES
Manufacturer
Silicon Labs
Datasheet
1.C8051F960-A-GQ.pdf
(492 pages)
Specifications of C8051F960-A-GQ
Rohs
yes
Core
8051
Processor Series
C8051
Data Bus Width
8 bit
Maximum Clock Frequency
24.5 MHz
Program Memory Size
128 KB
Data Ram Size
8 KB
On-chip Adc
Yes
Operating Supply Voltage
1.8 V to 3.8 V
Operating Temperature Range
- 40 C to + 85 C
Package / Case
QFP-80
Mounting Style
SMD/SMT
Available stocks
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Company:
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C8051F960-A-GQ
Manufacturer:
Silicon Laboratories Inc
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14.2. Key Inversion
The Key output is used to generate an inverse key. To generate a decryption key from an encryption key,
the AES core should be configured for an encryption operation. Dummy data and the encryption key are
written to the AES0BIN and AES0KIN sfrs respectively. The output multiplexer should be configured to out-
put the decryption key to the AES0YOUT SFR.
The dummy data may be zeros or arbitrary data. The content of the dummy data does not matter. But six-
teen bytes of data must be written to the AES0BIN sfr to generate the inverse key.
AES0DCFG
AES0BCFG
AES0KIN
internal state
Figure 14.2. Key Inversion Data Flow
machine
Key
In
Rev. 0.5
AES0BIN
Data Out
Data In
Core
AES
AES0YOUT
+
+
Key
Out
AES0XIN
C8051F96x
179
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