HD64F7051SFJ20V Renesas Electronics America, HD64F7051SFJ20V Datasheet - Page 476

• Manufacturer Part Number: HD64F7051SFJ20V
• Description: MCU 5V 256K J-TEMP PB-FREE QFP-1
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7050r

Specifications of HD64F7051SFJ20V

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: EBI/EMI, SCI
• Peripherals: DMA, WDT
• Number Of I /o: 102
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 168-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 14 A/D Converter
14.4.4
External Triggering of A/D Conversion
A/D conversion can be externally triggered. To activate the A/D converter with an external trigger,
first set the pin functions with the PFC (pin function controller), then set the TRGE bit to 1 in the
A/D control register (ADCR). For the A/D0 converter module, also set the EXTRG bit in the A/D
trigger register (ADTRGR). When a low-level pulse is input to the ADTRG pin after these settings
have been made, the A/D converter detects the falling edge of the pulse and sets the ADST bit to
1. Figure 14.6 shows the timing for external trigger input.
The ADST bit is set to 1 one state after the A/D converter samples the falling edge on the ADTRG
pin. The timing from setting of the ADST bit until the start of A/D conversion is the same as when
1 is written into the ADST bit by software.
ADTRG pin sampled
ADTRG input
ADST bit
ADST = 1
Figure 14.6 External Trigger Input Timing
Rev. 5.00 Jan 06, 2006 page 454 of 818
REJ09B0273-0500