UPD70F3739GC-UEU-AX Renesas Electronics America, UPD70F3739GC-UEU-AX Datasheet - Page 734
UPD70F3739GC-UEU-AX
Manufacturer Part Number
UPD70F3739GC-UEU-AX
Description
MCU 32BIT V850ES/JX3 100-LQFP
Manufacturer
Renesas Electronics America
Series
V850ES/Jx3r
Datasheet
1.UPD70F3739GC-UEU-AX.pdf
(889 pages)
Specifications of UPD70F3739GC-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
384KB (384K x 8)
Program Memory Type
FLASH
Ram Size
32K 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
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
UPD70F3739GC-UEU-AX
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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V850ES/JG3
when transmitting/receiving data consisting of several bytes.
LSB-first as an example.
R01UH0015EJ0300 Rev.3.00
Sep 30, 2010
Communication errors can easily be detected if the CRC code is transmitted/received along with transmit/receive data
The following is an illustration using the transmission of 12345678H (0001 0010 0011 0100 0101 0110 0111 1000B)
Setting procedure on transmitting side
Setting procedure on receiving side
<1> Write the initial value 0000H to the CRCD register.
<2> Write the 1 byte of data to be transmitted first to the transmit buffer register. (At this time, also write the same
<3> When transmitting several bytes of data, write the same data to the CRCIN register each time transmit data is
<4> After all the data has been transmitted, write the contents of the CRCD register (CRC code) to the transmit
<1> Write the initial value 0000H to the CRCD register.
<2> When reception of the first 1 byte of data is complete, write that receive data to the CRCIN register.
<3> If receiving several bytes of data, write the receive data to the CRCIN register upon every reception completion.
<4> Next, the CRC code is transmitted from the transmitting side, so write this data to the CRCIN register similarly
<5> When reception of all the data, including the CRC code, has been completed, reception was normal if the
data to the CRCIN register.)
written to the transmit buffer register.
buffer register and transmit them. (Since this is LSB first, transmit the data starting from the lower bytes, then
the higher bytes.)
(In the case of normal reception, when all the receive data has been written to the CRCIN register, the
contents of the CRCD register on the receiving side and the contents of the CRCD register on the transmitting
side are the same.)
to receive data.
contents of the CRCD register are 0000H. If the contents of the CRCD register are other than 0000H, this
indicates a communication error, so transmit a resend request to the transmitting side.
78
Figure 25-4. CRC Transmission Example
Transmit/receive data
(12345678H)
56
34
12
F6
CRC code
(08F6H)
08
CHAPTER 25 CRC FUNCTION
Page 718 of 870
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