UPD70F3736GK-GAK-AX Renesas Electronics America, UPD70F3736GK-GAK-AX Datasheet - Page 722

• Manufacturer Part Number: UPD70F3736GK-GAK-AX
• Description: MCU 32BIT V850ES/JX3-L 80-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Lr

Specifications of UPD70F3736GK-GAK-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: 66
• Core Processor: RISC
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Program Memory Size: 256KB (256K x 8)
• Data Converters: A/D 8x10b, D/A 1x8b
• 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.
722
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 U18952EJ1V0UD
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
12