M30845FJGP#U3 Renesas Electronics America, M30845FJGP#U3 Datasheet - Page 292

IC M32C MCU FLASH 512K 144LQFP

M30845FJGP#U3

Manufacturer Part Number
M30845FJGP#U3
Description
IC M32C MCU FLASH 512K 144LQFP
Manufacturer
Renesas Electronics America
Series
M16C™ M32C/80r
Datasheets

Specifications of M30845FJGP#U3

Core Processor
M32C/80
Core Size
16/32-Bit
Speed
32MHz
Connectivity
CAN, I²C, IEBus, SIO, UART/USART
Peripherals
DMA, PWM, WDT
Number Of I /o
121
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
24K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 34x10b, D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
144-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-

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M
R
R
e
E
3
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J
2
Figure 20.3 CRC Calculation
0
C
1
9
8 /
0 .
B
0
1
4
CRC Calculation and Setup Procedure to Generate CRC Code for "80C4
0
G
3
J
6
u
o r
0 -
. l
"0001 0001 1000 1001
be read from the CRCD register.
When going on to (4) above, "23
"11000100
Add "1100 0100 0000 0000 0000 0000
remainder of (3) left in the CRCD register to perform the modulo-2 division.
"0000 1010 0100 0001
(2) Set "0000
(3) Set "01
(4) Set "23
u
(1) Inverse a bit position of "80C4
As shown in (3) above, bit position of "01
"10000000
Add "1000 0000 0000 0000 0000 0000
CRCD register to perform the modulo-2 division.
Generator Polynomial
Setting Steps
Details of CRC Calculation
0
1
CRC Calculation for M32C
CRC Code : a remainder of a division,
Generator Polynomial : X
p
, 7
0
1
(
2
M
0
3
0
"80
2
2
5
".
16
16
2
C
".
16
"
"
16
8 /
"
1 0001 0000 0010 0001
" (default value)
Page 269
, 4
"01
M
2
2
3
16
(1189
(0A41
2
", "C4
16
C
8 /
+ X
f o
16
16
)", the remainder "1001 0001 1000 1000
4
16
)", the remainder with inversed bit position, can be read from CRCD register.
4
12
16
) T
9
16
(00100011
"
+ X
5
" per byte by program
2
5
b15
b15
b15
", as "11000100
"23
2
+ 1 (1 0001 0000 0010 0001
1000 0000 0000 0000 0000 0000
1000 1000 0001 0000 1
", as "10000000
value of the CRCIN register with inversed bit position
16
CRC Code
16
" (00000001
"
2
)" written in the CRCIN register is inversed and becomes
1000 0001 0000 1000 0
1000 1000 0001 0000 1
1189
0A41
1001 0001 1000 1000
b7
b7
2
16
16
" plus 16 digits, to "1001 0001 1000 1000
2
2
generator polynomial
) written to the CRCIN register is inversed and becomes
" plus 16 digits, to "0000
1000 1000
b0
b0
b0
b0
b0
2
)
CRCIN register
CRCIN register
CRCD register
CRCD register
CRCD register
Bit position of the CRC code for "80
(9188
stored into the CRCD register in 3rd cycle.
Bit position of the CRC code for "80C4
(8250
stored into the CRCD register in 3rd cycle.
2
(9188
16
16
) is inversed to "1189
) is inversed to "0A41
16
)" with inversed bit position, can
16
data
" as the default value of the
2
" as a
Modulo-2 Arithmetic is
calculated on the law below.
16
16
", which is
", which is
16
16
0 + 0 = 0
0 + 1 = 1
1 + 0 = 1
1 + 1 = 0
"
20. CRC Calculation
16
"
- 1 = 1
"