C8051F964-A-GQ Silicon Labs, C8051F964-A-GQ Datasheet - Page 195
C8051F964-A-GQ
Manufacturer Part Number
C8051F964-A-GQ
Description
8-bit Microcontrollers - MCU 64KB DC-DC LCD AES
Manufacturer
Silicon Labs
Datasheet
1.C8051F960-A-GQ.pdf
(492 pages)
Specifications of C8051F964-A-GQ
Rohs
yes
Core
8051
Processor Series
C8051
Data Bus Width
8 bit
Maximum Clock Frequency
24.5 MHz
Program Memory Size
64 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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Manufacturer
Quantity
Price
Company:
Part Number:
C8051F964-A-GQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
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14.6.4. CBC Decryption
The AES0 module data flow for CBC encryption is shown in Figure 14.6. The ciphertext is written to the
AES0BIN sfr. For the first block, the initialization vector is written to the AES0XIN sfr. For subsequent
blocks, the previous block ciphertext is written to the AES0XIN sfr. The AES0DCF sfr is configured to XOR
AES0XIN with AES0BIN for the AES core data input. The XOR on the output is not used. The AES core is
configured for an encryption operation. The encryption key is written to AES0KIN. The key size is set to the
desired key size.
AES0DCFG
AES0BCFG
AES0KIN
internal state
Figure 14.6. CBC Decryption Data Flow
machine
Key
In
Rev. 0.5
AES0BIN
Data Out
Data In
Core
AES
AES0YOUT
+
+
Key
Out
AES0XIN
C8051F96x
195
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