M30800SFP-BL#U5 Renesas Electronics America, M30800SFP-BL#U5 Datasheet - Page 192

• Manufacturer Part Number: M30800SFP-BL#U5
• Description: MCU 3/5V 0K,PB-FREE 100-QFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/80r

Specifications of M30800SFP-BL#U5

• Core Processor: M16C/80
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SIO, UART/USART
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 45
• Program Memory Type: ROMless
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 10x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

M
R
R
e
E
1
v
J
6
Figure 23.3 CRC example
1 .
0
C
9
0 .
8 /
(2) Setting 01
(3) Setting 23
(1) Setting 0000
B
0
0
0
1
A
G
8
u
7
o r
. g
0 -
The code resulting from sending 01
(X
conformity with the modulo-2 operation.
Thus the CRC code becomes (1001 0001 1000 1000). Since the operation is in LSB first mode, the (1001 0001 1000 1000)
corresponds to 1189
circuit built in the M16C, switch between the LSB side and the MSB side of the input-holding bits, and carry out the CRC
operation. Also switch between the MSB and LSB of the result as stored in CRC data.
u
1
16
0
p
0
, 2
+ X
0
16
16
2
1 0001 0000 0010 0001 1000 0000 0000 0000 0000 0000
16
12
0
0
+ X
5
Page 179
5
+ 1), becomes the remainder resulting from dividing (1000 0000) X
b15
b15
b15
16
in hexadecimal notation. If the CRC operation in MSB first mode is necessary in the CRC operation
LSB
f o
9
3
2
1000 1000 0001 0000 1
9
1189
0A41
16
8
LSB
b7
b7
in LSB first mode is (1000 0000). Thus the CRC code in the generating polynomial,
16
1000 0001 0000 1000 0
1000 1000 0001 0000 1
16
1001 0001 1000 1000
1
1
b0
b0
b0
b0
b0
1000 1000
2 cycles
After CRC calculation is complete
CRC data register
Stores CRC code
CRC data register
After CRC calculation is complete
Stores CRC code
CRC data register CRCD
CRC input register
CRC input register
MSB
MSB
16
[037D
CRCIN
[037E
CRCD
[037D
CRCIN
[037E
CRCD
[037D
by (1 0001 0000 0010 0001) in
23. CRC Calculation Circuit
16
16
16
16
16
Modulo-2 operation is
operation that complies
with the law given below.
, 037C
]
, 037C
]
, 037C
16
16
16
0 + 0 = 0
0 + 1 = 1
1 + 0 = 1
1 + 1 = 0
]
]
]
-1 = 1