DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 437
![MCU RISC FLASH 32K 8K 64LQFP](/photos/28/61/286100/64-lqfp__plqp0064kb-a_sml.jpg)
DF71251AD50FPV
Manufacturer Part Number
DF71251AD50FPV
Description
MCU RISC FLASH 32K 8K 64LQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH Tinyr
Datasheet
1.DF71243N50FPV.pdf
(794 pages)
Specifications of DF71251AD50FPV
Core Processor
SH-2
Core Size
32-Bit
Speed
50MHz
Connectivity
SCI
Peripherals
POR, PWM, WDT
Number Of I /o
37
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
64-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF71251AD50FPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 437 of 794
- Download datasheet (5Mb)
12.3.1
SCRSR receives serial data. Data input at the RXD pin is loaded into SCRSR in the order
received, LSB (bit 0) first, converting the data to parallel form. When one byte has been received,
it is automatically transferred to SCRDR. The CPU cannot read or write to SCRSR directly.
12.3.2
SCRDR is a register that stores serial receive data. After receiving one byte of serial data, the SCI
transfers the received data from the receive shift register (SCRSR) into SCRDR for storage and
completes operation. After that, SCRSR is ready to receive data.
Since SCRSR and SCRDR work as a double buffer in this way, data can be received continuously.
SCRDR is a read-only register and cannot be written to by the CPU.
12.3.3
SCTSR transmits serial data. The SCI loads transmit data from the transmit data register (SCTDR)
into SCTSR, and then transmits the data serially from the TXD pin, LSB (bit 0) first. After
transmitting one data byte, the SCI automatically loads the next transmit data from SCTDR into
SCTSR and starts transmitting again. If the TDRE flag in the serial status register (SCSSR) is set
to 1, the SCI does not transfer data from SCTDR to SCTSR. The CPU cannot read or write to
SCTSR directly.
Receive Shift Register (SCRSR)
Receive Data Register (SCRDR)
Transmit Shift Register (SCTSR)
Initial value:
Initial value:
Initial value:
R/W:
R/W:
R/W:
Bit:
Bit:
Bit:
R
7
7
7
-
-
-
-
-
R
6
6
6
-
-
-
-
-
R
5
5
5
-
-
-
-
-
R
4
4
4
-
-
-
-
-
R
3
3
3
-
-
-
-
-
Rev. 5.00 Mar. 06, 2009 Page 417 of 770
R
2
2
2
-
-
-
-
-
R
1
1
1
-
-
-
-
-
R
0
0
0
-
-
-
-
-
REJ09B0243-0500
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