DF2357F20 Renesas Electronics America, DF2357F20 Datasheet - Page 499
DF2357F20
Manufacturer Part Number
DF2357F20
Description
IC H8S MCU FLASH 5V 128K 128QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Datasheet
1.D12392F20V.pdf
(1049 pages)
Specifications of DF2357F20
Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
87
Program Memory Size
128KB (128K 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
128-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2357F20
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
DF2357F20IV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 499 of 1049
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14.2
14.2.1
RSR is a register used to receive serial data.
The SCI sets serial data input from the RxD pin in RSR in the order received, starting with the LSB (bit 0), and converts it
to parallel data. When one byte of data has been received, it is transferred to RDR automatically.
RSR cannot be directly read or written to by the CPU.
14.2.2
RDR is a register that stores received serial data.
When the SCI has received one byte of serial data, it transfers the received serial data from RSR to RDR where it is stored,
and completes the receive operation. After this, RSR is receive-enabled.
Since RSR and RDR function as a double buffer in this way, enables continuous receive operations to be performed.
RDR is a read-only register, and cannot be written to by the CPU.
RDR is initialized to H'00 by a reset, and in standby mode or module stop mode.
14.2.3
TSR is a register used to transmit serial data.
To perform serial data transmission, the SCI first transfers transmit data from TDR to TSR, then sends the data to the TxD
pin starting with the LSB (bit 0).
When transmission of one byte is completed, the next transmit data is transferred from TDR to TSR, and transmission
started, automatically. However, data transfer from TDR to TSR is not performed if the TDRE bit in SSR is set to 1.
TSR cannot be directly read or written to by the CPU.
Bit
Initial value :
R/W
Bit
R/W
Bit
R/W
Register Descriptions
Receive Shift Register (RSR)
Receive Data Register (RDR)
Transmit Shift Register (TSR)
:
:
:
:
:
:
—
—
7
7
0
R
7
—
—
6
6
0
R
6
—
—
5
5
0
R
5
—
—
4
4
0
R
4
—
—
3
3
0
R
3
—
—
2
2
0
R
2
—
—
Rev.6.00 Oct.28.2004 page 469 of 1016
1
1
0
R
1
—
—
0
0
0
R
0
REJ09B0138-0600H
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