DF2398TE20 Renesas Electronics America, DF2398TE20 Datasheet - Page 564

• Manufacturer Part Number: DF2398TE20
• Description: IC H8S MCU FLASH 256K 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2398TE20

• 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: 256KB (256K 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: 120-TQFP, 120-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2398TE20; HD64F2398TE20

and TEND flags are automatically cleared to 0 when data transfer is performed by the DMAC or DTC. In the event of an
error, the SCI retransmits the same data automatically. The TEND flag remains cleared to 0 during this time, and the
DMAC is not activated. Thus, the number of bytes specified by the SCI and DMAC are transmitted automatically even in
retransmission following an error. However, the ERS flag is not cleared automatically when an error occurs, and so the
RIE bit should be set to 1 beforehand so that an ERI request will be generated in the event of an error, and the ERS flag
will be cleared.
When performing transfer using the DMAC or DTC, it is essential to set and enable the DMAC or DTC before carrying
out SCI setting. For details of the DMAC and DTC setting procedures, see section 7, DMA Controller, and section 8, Data
Transfer Controller.
In a receive operation, an RXI interrupt request is generated when the RDRF flag in SSR is set to 1. If the RXI request is
designated beforehand as a DMAC or DTC activation source, the DMAC or DTC will be activated by the RXI request,
and transfer of the receive data will be carried out. The RDRF flag is cleared to 0 automatically when data transfer is
performed by the DMAC or DTC. If an error occurs, an error flag is set but the RDRF flag is not. Consequently, the
DMAC or DTC is not activated, but instead, an ERI interrupt request is sent to the CPU. Therefore, the error flag should
be cleared.
15.3.7
Switching the Mode: When switching between Smart Card interface mode and software standby mode, the following
switching procedure should be followed in order to maintain the clock duty.
•
[1] Set the data register (DR) and data direction register (DDR) corresponding to the SCK pin to the value for the fixed
[2] Write 0 to the TE bit and RE bit in the serial control register (SCR) to halt transmit/receive operation. At the same
[3] Write 0 to the CKE0 bit in SCR to halt the clock.
[4] Wait for one serial clock period.
[5] Write H'00 to SMR and SCMR.
[6] Make the transition to the software standby state.
•
[7] Exit the software standby state.
[8] Set the CKE1 bit in SCR to the value for the fixed output state (current SCK pin state) when software standby mode is
[9] Set Smart Card interface mode and output the clock. Signal generation is started with the normal duty.
Rev.6.00 Oct.28.2004 page 534 of 1016
REJ09B0138-0600H
When changing from Smart Card interface mode to software standby mode
output state in software standby mode.
time, set the CKE1 bit to the value for the fixed output state in software standby mode.
During this interval, clock output is fixed at the specified level, with the duty preserved.
When returning to Smart Card interface mode from software standby mode
initiated.
Operation in GSM Mode