HD6473937W Renesas Electronics America, HD6473937W Datasheet - Page 325
HD6473937W
Manufacturer Part Number
HD6473937W
Description
MCU FLASH OTP 60K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300L SLPr
Datasheet
1.HD6473937RXV.pdf
(523 pages)
Specifications of HD6473937W
Core Processor
H8/300L
Core Size
8-Bit
Speed
10MHz
Connectivity
SCI
Peripherals
POR, WDT
Number Of I /o
59
Program Memory Size
60KB (60K x 8)
Program Memory Type
OTP
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6473937W
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Consequently, the receive margin in asynchronous mode can be expressed as shown in equation
(1).
M ={(0.5 –
where
M: Receive margin (%)
N: Ratio of bit rate to clock (N = 16)
D: Clock duty (D = 0.5 to 1.0)
L: Frame length (L = 9 to 12)
F: Absolute value of clock frequency deviation
Substituting 0 for F (absolute value of clock frequency deviation) and 0.5 for D (clock duty) in
equation (1), a receive margin of 46.875% is given by equation (2).
When D = 0.5 and F = 0,
M = {0.5 — 1/(2 16)} 100 [%]
However, this is only a computed value, and a margin of 20% to 30% should be allowed when
carrying out system design.
Internal
basic clock
Receive data
(RXD3x)
Synchronization
sampling timing
Data sampling
timing
= 46.875%
2N
Figure 10-23 Receive Data Sampling Timing in Asynchronous Mode
1
) –
D – 0.5
0
N
8 clock pulses
Start bit
– (L – 0.5) F} 5 100 [%]
16 clock pulses
7
..... Equation (2)
15 0
..... Equation (1)
D0
7
15 0
D1
311
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