DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 581

• 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: -

Table 18.4 A/D Conversion Time (Scan Mode)
18.4.4
A/D conversion can be started by an external trigger input. When the TRGS1 and TRGS0 bits in
ADCR are set to 11, an external trigger input is enabled at the ADTRG pin. A falling edge at the
ADTRG pin sets the ADST bit in ADCSR to 1, starting A/D conversion. Other operations, in both
single and scan modes, are the same as when the ADST bit has been set to 1 by software. Figure
18.3 shows the timing.
CKS1
0
1
φ
Internal trigger signal
ADST
External Trigger Input Timing
CKS0
0
1
0
1
Figure 18.3 External Trigger Input Timing
Conversion Time (State)
512 (Fixed)
256 (Fixed)
128 (Fixed)
64 (Fixed)
Rev.2.00 May. 28, 2009 Page 541 of 732
A/D conversion
REJ09B0059-0200