DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 493

• Manufacturer Part Number: DF2437FV
• Description: IC H8S/2437 MCU FLASH 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of DF2437FV

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

16.3.7
SSR is a register containing status flags of the SCI and multiprocessor bits for transfer. TDRE,
RDRF, ORER, PER, and FER can only be cleared.
Bit
7
6
5
Serial Status Register (SSR)
Bit Name
TDRE
RDRF
ORER
Initial Value
1
0
0
R/W
R/(W)* Transmit Data Register Empty
R/(W)* Receive Data Register Full
R/(W)* Overrun Error
Description
Indicates whether TDR contains transmit data.
[Setting conditions]
•
•
[Clearing conditions]
•
Indicates whether receive data is stored in RDR.
[Setting condition]
•
[Clearing conditions]
•
The RDRF flag is not affected and retains its
previous value even if the RE bit in SCR is cleared
to 0.
[Setting condition]
•
[Clearing condition]
•
When the TE bit in SCR is 0
When data is transferred from TDR to TSR
and TDR is ready for data write
When 0 is written to TDRE after reading TDRE
= 1
When serial reception ends normally and
receive data is transferred from RSR to RDR
When 0 is written to RDRF after reading RDRF
= 1
When the next serial reception is completed
while RDRF = 1
When 0 is written to ORER after reading
ORER = 1
Rev.2.00 May. 28, 2009 Page 453 of 732
REJ09B0059-0200