DF2357F20 Renesas Electronics America, DF2357F20 Datasheet - Page 580

• Manufacturer Part Number: DF2357F20
• Description: IC H8S MCU FLASH 5V 128K 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2357F20

• 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: 128KB (128K 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: 128-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

16.4.4
A/D conversion can be externally triggered. When the TRGS1 and TRGS0 bits are set to 11 in ADCR, external trigger
input is enabled at the ADTRG pin. A falling edge at the ADTRG pin sets the ADST bit to 1 in ADCSR, starting A/D
conversion. Other operations, in both single and scan modes, are the same as if the ADST bit has been set to 1 by
software. Figure 16-6 shows the timing.
16.5
The A/D converter generates an A/D conversion end interrupt (ADI) at the end of A/D conversion. ADI interrupt requests
can be enabled or disabled by means of the ADIE bit in ADCSR.
The DTC or DMAC can be activated by an ADI interrupt. Having the converted data read by the DTC or DMAC in
response to an ADI interrupt enables continuous conversion to be achieved without imposing a load on software.
The A/D converter interrupt source is shown in table 16-5.
Table 16-5 A/D Converter Interrupt Source
Rev.6.00 Oct.28.2004 page 550 of 1016
REJ09B0138-0600H
External Trigger Input Timing
Interrupts
Interrupt Source
ADI
ø
ADTRG
ADST
Internal trigger signal
Description
Interrupt due to end of conversion
Figure 16-6 External Trigger Input Timing
A/D conversion
DTC or DMAC Activation
Possible