UPD70F3740GC-UEU-AX Renesas Electronics America, UPD70F3740GC-UEU-AX Datasheet - Page 732

• Manufacturer Part Number: UPD70F3740GC-UEU-AX
• Description: MCU 32BIT V850ES/JX3 100-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3r

Specifications of UPD70F3740GC-UEU-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 32MHz
• Connectivity: CSI, EBI/EMI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 84
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 40K x 8
• Voltage - Supply (vcc/vdd): 2.85 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

V850ES/JG3
25.4 Operation
X
formula.
R01UH0015EJ0300 Rev.3.00
Sep 30, 2010
5
+ 1 becomes the remainder when (1000 0000) X
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.
0 + 0 = 0
0 + 1 = 1
1 + 0 = 1
1 + 1 = 0
Therefore, the CRC code becomes
to 1189H in hexadecimal notation.
1 0001 0000 0010 0001 1000 0000 0000 0000 0000 0000
− 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
1000 0001 0000 1000 0
1000 1000 0001 0000 1
16
1001
1001 0001 1000 1000
is divided by (1 0001 0000 0010 0001) using the modulo-2 operation
9
b15
0001 1000 1000
8
1000 1000
1
1
1189H
b7
MSB
MSB
. Since LSB first is used, this corresponds
CRC code is stored
CHAPTER 25 CRC FUNCTION
b0
b0
Page 716 of 870
16
+ X
12
+