DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 532

• 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: -

Reception: Before making the transition to module stop, software standby, watch, subactive, or
subsleep mode, stop reception (RE = 0). RSR, RDR, and SSR are reset. If transition is made
during data reception, the data being received will be invalid.
To receive data in the same reception mode after mode cancellation, set RE to 1, and then start
reception. To receive data in a different reception mode, initialize the SCI first.
Figure 16.24 shows a sample flowchart for mode transition during reception.
Rev.2.00 May. 28, 2009 Page 492 of 732
REJ09B0059-0200
output pin
output pin
output pin
output pin
SCK
SCK
TxD
TxD
TE bit
Figure 16.22 Pin States during Transmission in Asynchronous Mode (Internal Clock)
TE bit
Note: * Initialized in software standby mode
Figure 16.23 Pin States during Transmission in Clocked Synchronous Mode
input/output
input/output
Port
Port
Port
Port
High output
Marking output
Transmission start
Transmission start
Start
SCI TxD output
SCI TxD output
(Internal Clock)
Transmission end
Transmission end
Last TxD bit retained
Stop
Transition to
software standby
mode
Transition to
software standby
mode
Port input/output
Port input/output
input/output
input/output
Port
Port
Port
Port
Software standby
mode cancelled
Software standby
mode cancelled
High
High output
TxD output
TxD output
output*
SCI
SCI