DF3052BX25V Renesas Electronics America, DF3052BX25V Datasheet - Page 521
DF3052BX25V
Manufacturer Part Number
DF3052BX25V
Description
MCU 5V 512K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Specifications of DF3052BX25V
Core Processor
H8/300H
Core Size
16-Bit
Speed
25MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
70
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF3052BX25V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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The receive margin in asynchronous mode can therefore be expressed as in equation (1).
From equation (1), if F = 0 and D = 0.5 the receive margin is 46.875%, as given by equation (2).
This is a theoretical value. A reasonable margin to allow in system designs is 20% to 30%.
Restrictions on Usage of DMAC: To have the DMAC read RDR, be sure to select the SCI
receive-data-full interrupt (RXI) as the activation source with bits DTS2 to DTS0 in DTCR.
Restrictions on Usage of the Serial Clock: When transmitting data using the serial clock as an
external clock, after clearing SSR of TDRE, maintain the space between each frame of the lead of
the transmission clock (start-up edge) at five states or more (see Figure 13.22). This condition is
also needed for continuous transmission. If it is not fulfilled, operational error will occur.
SCK
TDRE
TXD
Note: *
Ensure that t
M = (0.5 –
M: Receive margin (%)
N: Ratio of clock frequency to bit rate (N = 16)
D: Clock duty cycle (D = 0 to 1.0)
L:
F:
D = 0.5, F = 0
M = {0.5 – 1/(2
= 46.875% ............................................................................................. (2)
t*
Frame length (L = 9 to 12)
Absolute deviation of clock frequency
X0
5 states.
2N
Figure 13.22 Serial Clock Transmission (Example)
1
X1
) – (L – 0.5) F –
16)}
X2
100%
X3
X4
D – 0.5
N
X5
(1 + F)
Section 13 Serial Communication Interface
X6
Rev. 3.00 Mar 21, 2006 page 491 of 814
X7
100% ................... (1)
t*
Y0
Continuous transmission
Y1
REJ09B0302-0300
Y2
Y3
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