DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 533

MCU 5V 128K I-TEMP,PB-FREE, 100-

DF2148RTE20IV

Manufacturer Part Number
DF2148RTE20IV
Description
MCU 5V 128K I-TEMP,PB-FREE, 100-
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Datasheets

Specifications of DF2148RTE20IV

Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
Host Interface, I²C, IrDA, SCI
Peripherals
POR, PWM, WDT
Number Of I /o
74
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
TXI interrupt are requested simultaneously, the TXI interrupt will have priority for acceptance,
and the TDRE flag and TEND flag may be cleared. Note that the TEI interrupt will not be
accepted in this case.
15.5
The following points should be noted when using the SCI.
Relation between Writes to TDR and the TDRE Flag
The TDRE flag in SSR is a status flag that indicates that transmit data has been transferred from
TDR to TSR. When the SCI transfers data from TDR to TSR, the TDRE flag is set to 1.
Data can be written to TDR regardless of the state of the TDRE flag. However, if new data is
written to TDR when the TDRE flag is cleared to 0, the data stored in TDR will be lost since it has
not yet been transferred to TSR. It is therefore essential to check that the TDRE flag is set to 1
before writing transmit data to TDR.
Operation when Multiple Receive Errors Occur Simultaneously
If a number of receive errors occur at the same time, the state of the status flags in SSR is as
shown in table 15.14. If there is an overrun error, data is not transferred from RSR to RDR, and
the receive data is lost.
Table 15.14 State of SSR Status Flags and Transfer of Receive Data
Notes: O: Receive data is transferred from RSR to RDR.
RDRF
1
0
0
1
1
0
1
X: Receive data is not transferred from RSR to RDR.
ORER
1
0
0
1
1
0
1
SSR Status Flags
Usage Notes
FER
0
1
0
1
0
1
1
PER
0
0
1
0
1
1
1
Receive Data Transfer
RSR to RDR
X
O
O
X
X
O
X
Section 15 Serial Communication Interface (SCI, IrDA)
Rev. 4.00 Sep 27, 2006 page 487 of 1130
Receive Errors
Overrun error
Framing error
Parity error
Overrun error + framing error
Overrun error + parity error
Framing error + parity error
Overrun error + framing error +
parity error
REJ09B0327-0400

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