DF2166VT33WV Renesas Electronics America, DF2166VT33WV Datasheet - Page 424
![MCU 16BIT FLASH 3V 512K 144-TQFP](/photos/28/61/286114/144-tqfp_sml.jpg)
DF2166VT33WV
Manufacturer Part Number
DF2166VT33WV
Description
MCU 16BIT FLASH 3V 512K 144-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Datasheet
1.HS2168EPI61H-U.pdf
(876 pages)
Specifications of DF2166VT33WV
Core Processor
H8S/2000
Core Size
16-Bit
Speed
33MHz
Connectivity
I²C, IrDA, LPC, SCI, SmartCard
Peripherals
POR, PWM, WDT
Number Of I /o
106
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
40K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
144-TQFP, 144-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Quantity
Price
Company:
Part Number:
DF2166VT33WV
Manufacturer:
Renesas Electronics America
Quantity:
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Company:
Part Number:
DF2166VT33WV
Manufacturer:
Renesas Electronics America
Quantity:
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14.4.2
In asynchronous mode, the SCI operates on a basic clock with a frequency of 16 times the bit rate.
In reception, the SCI samples the falling edge of the start bit using the basic clock, and performs
internal synchronization. Since receive data is latched internally at the rising edge of the 8th pulse
of the basic clock, data is latched at the middle of each bit, as shown in figure 14.4. Thus the
reception margin in asynchronous mode is determined by formula (1) below.
Assuming values of F = 0 and D = 0.5 in formula (1), the reception margin is determined by the
formula below.
However, this is only the computed value, and a margin of 20% to 30% should be allowed in
system design.
Rev. 3.00, 03/04, page 382 of 830
Internal
basic clock
Receive data
(RxD)
Synchronization
sampling timing
Data sampling
timing
M = (0.5 –
M = {0.5 – 1/(2 × 16) } × 100
Receive Data Sampling Timing and Reception Margin in Asynchronous Mode
}
M:
N:
D:
L:
F:
Figure 14.4 Receive Data Sampling Timing in Asynchronous Mode
Reception margin (%)
Ratio of bit rate to clock (N = 16)
Clock duty (D = 0.5 to 1.0)
Frame length (L = 9 to 12)
Absolute value of clock rate deviation
2N
1
0
) –
8 clocks
Start bit
D – 0.5
N
16 clocks
(1+F) – (L – 0.5) F } × 100
7
[%] = 46.875 %
15 0
[%]
D0
... Formula (1)
7
15 0
D1
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