UPD70F3737GC-UEU-AX Renesas Electronics America, UPD70F3737GC-UEU-AX Datasheet - Page 743

• Manufacturer Part Number: UPD70F3737GC-UEU-AX
• Description: MCU 32BIT V850ES/JX3-L 100-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Lr

Specifications of UPD70F3737GC-UEU-AX

• Package / Case: *
• Voltage - Supply (vcc/vdd): 2.2 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 20MHz
• Number Of I /o: 84
• Core Processor: RISC
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Program Memory Size: 128KB (128K x 8)
• Data Converters: A/D 12x10b, D/A 2x8b
• Oscillator Type: Internal
• Peripherals: DMA, LVD, PWM, WDT
• Connectivity: CSI, EBI/EMI, I²C, UART/USART
• Core Size: 32-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

25.4 Operation
+ X
operation formula.
An example of the CRC operation circuit is shown below.
The code when 01H is sent LSB first is (1000 0000). Therefore, the CRC code from generation polynomial X
The modulo-2 operation is performed based on the following formula.
5
+ 1 becomes the remainder when (1000 0000) X
0 + 0 = 0
0 + 1 = 1
1 + 0 = 1
1 + 1 = 0
1 0001 0000 0010 0001 1000 0000 0000 0000 0000 0000
Therefore, the CRC code becomes
1189H in hexadecimal notation.
−1 = 1
(1) Setting of CRCIN = 01H
(2) CRCD register read
Figure 25-2. CRC Operation Circuit Operation Example (LSB First)
LSB
1000 1000 0001 0000 1
LSB
Preliminary User’s Manual U18953EJ1V0UD
1000 0001 0000 1000 0
1000 1000 0001 0000 1
CHAPTER 25 CRC FUNCTION
1001 0001 1000 1000
1001
9
0001 1000 1000
16
b15
8
is divided by (1 0001 0000 0010 0001) using the modulo-2
1000 1000
1
1
1189H
MSB
. Since LSB first is used, this corresponds to
MSB
b7
CRC code is stored
b0
b0
16
+ X
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