DF2556FC20DV Renesas Electronics America, DF2556FC20DV Datasheet - Page 654
![IC H8S/2556 MCU FLASH 144QFP](/photos/12/29/122969/df2556fc20dv_sml.jpg)
DF2556FC20DV
Manufacturer Part Number
DF2556FC20DV
Description
IC H8S/2556 MCU FLASH 144QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2500r
Specifications of DF2556FC20DV
Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
CAN, I²C, SCI
Peripherals
POR, PWM, WDT
Number Of I /o
104
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 16x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
144-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Section 17 IEBus™ Controller (IEB) [H8S/2552 Group]
(3)
When retransfer is performed up to the maximum number of transfer bytes defined by the protocol
because of reception of a NAK caused by a parity or an overrun error during data field reception,
the number of transferred bytes may be greater than that of bytes specified by the message length.
At this time the DLE flag is set. Moreover, when the value of the message length bits is greater
than the maximum number of transfer bytes, the DLE flag is also set. The DLE flag is not set if
the maximum number of transfer bytes defined by the protocol is specified and the transfer is
performed correctly.
If the DLE flag is set to 1, the RxE flag is set to 1 and the wait state is entered.
(4)
If a parity error occurs after reception starts (the RxS flag is set to 1), a NAK is sent to perform re-
reception.
If a parity error is not cleared when the maximum number of transfer bytes specified by the
protocol is received, the PE flag is set to 1, the RxE flag is set to 1 and the wait state is entered. If
a parity error is cleared during the rereception and if the following data is received correctly, the
PE flag is not set.
Notes: 1. If the reception is performed up to the maximum number of transfer bytes defined by
17.6.6
When the slave unit transmits the slave status and upper and lower locked addresses, a parity or an
overrun error occurs in the master reception side and the data cannot be received. Accordingly,
even if a NAK is returned, the slave unit is not capable of retransfer.
In this case, the master unit must discard the frame in which an error occurred and request the
above operation in the master reception to receive the correct frame.
Rev. 6.00 Sep. 24, 2009 Page 606 of 928
REJ09B0099-0600
DLE Flag
PE Flag
2. The flags in IEREF are set after reception starts. Accordingly, the RxE flag is valid and
Notes on Slave Transmission
the protocol because of a parity or an overrun error during data field reception, the
number of receive bytes is less than that of bytes specified by the message length bits,
no parity error or overrun error may occur at the last byte reception. In this case, the
DLE flag is set. However, the OVE and PE flags are not set.
set after the RxS flag has been set. If an error occurs before reception starts, the frame
is discarded and no interrupt occurs.
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