HD64F38024DV Renesas Electronics America, HD64F38024DV Datasheet - Page 402
HD64F38024DV
Manufacturer Part Number
HD64F38024DV
Description
IC H8/SLP MCU FLASH 80QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300L SLPr
Datasheets
1.US38024-BAG1.pdf
(684 pages)
2.DF36012GFYV.pdf
(1021 pages)
3.DF38102HV.pdf
(145 pages)
Specifications of HD64F38024DV
Core Processor
H8/300L
Core Size
8-Bit
Speed
10MHz
Connectivity
SCI
Peripherals
LCD, PWM, WDT
Number Of I /o
51
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
80-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Company:
Part Number:
HD64F38024DV
Manufacturer:
Renesas Electronics America
Quantity:
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Section 10 Serial Communication Interface
10.5
The following points should be noted when using SCI3.
1. Relation between writes to TDR and bit TDRE
Bit TDRE in the serial status register (SSR) is a status flag that indicates that data for serial
transmission has not been prepared in TDR. When data is written to TDR, bit TDRE is cleared to
0 automatically. When SCI3 transfers data from TDR to TSR, bit TDRE is set to 1.
Data can be written to TDR irrespective of the state of bit TDRE, but if new data is written to
TDR while bit TDRE is cleared to 0, the data previously stored in TDR will be lost of it has not
yet been transferred to TSR. Accordingly, to ensure that serial transmission is performed
dependably, you should first check that bit TDRE is set to 1, then write the transmit data to TDR
once only (not two or more times).
2. Operation when a number of receive errors occur simultaneously
If a number of receive errors are detected simultaneously, the status flags in SSR will be set to the
states shown in table 10.14. If an overrun error is detected, data transfer from RSR to RDR will
not be performed, and the receive data will be lost.
Table 10.14 SSR Status Flag States and Receive Data Transfer
RDRF * OER FER
1
0
0
1
1
0
1
O : Receive data is transferred from RSR to RDR.
X : Receive data is not transferred from RSR to RDR.
Note: * Bit RDRF retains its state prior to data reception. However, note that if RDR is read after
Rev. 8.00 Mar. 09, 2010 Page 380 of 658
REJ09B0042-0800
SSR Status Flags
an overrun error has occurred in a frame because reading of the receive data in the
previous frame was delayed, RDRF will be cleared to 0.
1
0
0
1
1
0
1
Application Notes
0
1
0
1
0
1
1
0
0
1
0
1
1
1
PER
Receive Data Transfer
RSR → RDR
X
O
O
X
X
O
X
Overrun error
Framing error
Parity error
Overrun error + framing error
Overrun error + parity error
Framing error + parity error
Overrun error + framing error + parity error
Receive Error Status
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