DF2345TE20 Renesas Electronics America, DF2345TE20 Datasheet - Page 500

• Manufacturer Part Number: DF2345TE20
• Description: MCU 5V 128K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2345TE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 71
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K 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: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2345TE20; HD64F2345TE20

Section 12 Serial Communication Interface (SCI)
Restrictions on Use of DTC
Interrupts and Module Stop Mode: If module stop mode is entered when an interrupt has been
requested, it will not be possible to clear the CPU interrupt source or DTC activation source.
Interrupts should therefore be disabled before entering module stop mode.
Rev. 4.00 Feb 15, 2006 page 474 of 900
REJ09B0291-0400
When an external clock source is used as the serial clock, the transmit clock should not be
input until at least 5 clock cycles after TDR is updated by the DTC. Misoperation may occur
if the transmit clock is input within 4 clocks after TDR is updated. (Figure 12.22)
When RDR is read by the DTC, be sure to set the activation source to the relevant SCI
reception end interrupt (RXI).
SCK
TDRE
Serial data
Note: When operating on an external clock, set t >4 clocks.
Figure 12.22 Example of Clocked Synchronous Transmission by DTC
t
LSB
D0
D1
D2
D3
D4
D5
D6
D7