DF2238RTF6 Renesas Electronics America, DF2238RTF6 Datasheet - Page 552
DF2238RTF6
Manufacturer Part Number
DF2238RTF6
Description
MCU 2.2/3V 256K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2200r
Datasheet
1.DF2238RFA6V.pdf
(1048 pages)
Specifications of DF2238RTF6
Core Processor
H8S/2000
Core Size
16-Bit
Speed
6MHz
Connectivity
I²C, SCI, SmartCard
Peripherals
POR, PWM, WDT
Number Of I /o
72
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
2.2 V ~ 3.6 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
Contains lead / RoHS non-compliant
Eeprom Size
-
Other names
HD64F2238RTF6
HD64F2238RTF6
HD64F2238RTF6
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2238RTF6V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 14 IEBus™ Controller (IEB) [H8S/2258 Group]
(6) Data Field
The data field is a field for data transmission/reception to the slave unit. The master unit
transmits/receives data to/from the slave unit using the data field. The data field is comprised of
data bits, a parity bit, and an acknowledge bit.
The data bits include eight bits and are output MSB first.
The parity bit and acknowledge bit following the data bits are output from the master unit and
slave unit, respectively.
Broadcast communications are performed only for the transmission of the master unit. In this case,
the acknowledge bit is ignored. Operations in master transmission and master reception are
described below.
(a) Master Transmission
(b) Master Reception
Rev. 6.00 Mar. 18, 2010 Page 490 of 982
REJ09B0054-0600
The master unit transmits the data bits and parity bit to the slave unit to write data from the
master unit to the slave unit. The slave unit receives the data bits and parity bit, and returns the
acknowledgement if the parity bit is correct and the receive buffer is empty. If the parity bit is
not correct or the receive buffer is not empty, the slave unit rejects acceptance of
corresponding data and does not return the acknowledgement.
When the slave unit does not return the acknowledgement, the master unit retransmits the same
data. This operation is repeated until either the acknowledgement from the slave unit is
detected or the maximum number of data transfer bytes is exceeded.
When the parity is correct and the acknowledgement is output from the slave unit, the master
unit transmits the subsequent data if data remains and the maximum number of transfer bytes
is not exceeded.
In the case of broadcast communications, the slave unit does not return the acknowledgement,
and the master unit transfers data byte by byte.
The master unit outputs synchronous signals corresponding to all data bits to be read from the
slave unit.
The slave unit outputs the data bits and parity bit on the bus in accordance with the
synchronous signals from the master unit.
The master unit reads the parity bit output from the slave unit, and checks the parity. If the
parity is not correct, or the receive buffer is not empty, the master unit rejects acceptance of the
data, and does not return the acknowledgement. The master unit reads the same data repeatedly
if the number of data does not exceed the maximum number of transfer bytes in one frame. If
the parity is correct and the receive buffer is empty, the master unit accepts data and returns the
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