DF36054FPJ Renesas Electronics America, DF36054FPJ Datasheet - Page 327
![MCU 3/5V 32K J-TEMP 64-QFP](/photos/28/61/286100/64-lqfp__plqp0064kb-a_sml.jpg)
DF36054FPJ
Manufacturer Part Number
DF36054FPJ
Description
MCU 3/5V 32K J-TEMP 64-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300H Tinyr
Datasheet
1.DF36057GFZV.pdf
(594 pages)
Specifications of DF36054FPJ
Core Processor
H8/300H
Core Size
16-Bit
Speed
20MHz
Connectivity
CAN, SCI, SSU
Peripherals
PWM, WDT
Number Of I /o
45
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Other names
HD64F36054FPJ
HD64F36054FPJ
HD64F36054FPJ
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14.8.4
In asynchronous mode, the SCI3 operates on a basic clock with a frequency of 14 times the
transfer rate. In reception, the SCI3 samples the falling edge of the start bit using the basic clock,
and performs internal synchronization. Receive data is latched internally at the rising edge of the
8th pulse of the basic clock as shown in figure 14.19. Thus, the reception margin in asynchronous
mode is given by formula (1) below.
[Legend]
N: Ratio of bit rate to clock (N = 14)
D: Clock duty (D = 0.5 to 1.0)
L: Frame length (L = 9 to 12)
F: Absolute value of clock rate deviation
Assuming values of F (absolute value of clock rate deviation) = 0 and D (clock duty) = 0.5 in
formula (1), the reception margin can be given by the formula.
However, this is only the computed value, and a margin of 20% to 30% should be allowed for in
system design.
M = (0.5 –
M = {0.5 – 1/(2
Receive Data Sampling Timing and Reception Margin in Asynchronous Mode
Internal basic
clock
Receive data
(RxD)
Synchronization
sampling timing
Data sampling
timing
Figure 14.19 Receive Data Sampling Timing in Asynchronous Mode
2N
1
) –
14)}
0
D – 0.5
8 clocks
Start bit
N
100 [%] = 46.875%
16 clocks
– (L – 0.5) F
7
Section 14 Serial Communication Interface 3 (SCI3)
100(%)
15 0
Rev. 4.00 Mar. 15, 2006 Page 293 of 556
D0
7
... Formula (1)
REJ09B0026-0400
15 0
D1
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