DF3052BX25V Renesas Electronics America, DF3052BX25V Datasheet - Page 548
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
-
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Manufacturer
Quantity
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Part Number:
DF3052BX25V
Manufacturer:
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Quantity:
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Section 14 Smart Card Interface
From this equation, if F = 0 and D = 0.5 the receive margin is as follows.
Retransmission: Retransmission is described below for the separate cases of transmit mode and
receive mode.
Rev. 3.00 Mar 21, 2006 page 518 of 814
REJ09B0302-0300
Retransmission when SCI is in Receive Mode (See Figure 14.11)
1. The SCI checks the received parity bit. If it detects an error, it automatically sets the PER
2. The RDRF bit in SSR is not set to 1 for the error frame.
3. If an error is not detected when the parity bit is checked, the PER flag is not set in SSR.
4. If an error is not detected when the parity bit is checked, receiving operations are assumed
5. When a normal frame is received, at the error signal transmit timing, the data pin is held in
RDRF
PER
flag to 1. If the RIE bit in SCR is set to the enable state, an ERI interrupt is requested. The
PER flag should be cleared to 0 in SSR before the next parity bit sampling timing.
to have ended normally, and the RDRF bit is automatically set to 1 in SSR. If the RIE bit in
SCR is set to the enable state, an RXI interrupt is requested. If RXI is enabled as a DMA
transfer activation source, the RDR contents can be read automatically. When the DMAC
reads the RDR data, it automatically clears RDRF to 0.
the high-impedance state.
Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp
D = 0.5, F = 0
M = {0.5 – 1/(2
= 49.866%
Frame n
Figure 14.11 Retransmission in SCI Receive Mode
372)}
100%
DE
(2)
(1)
Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp
Retransmitted frame
(DE)
(4)
(3)
Ds
D0 D1 D2 D3 D4
Frame n + 1
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