HD6417011VX20V Renesas Electronics America, HD6417011VX20V Datasheet - Page 254

• Manufacturer Part Number: HD6417011VX20V
• Description: MPU 5V 0K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7010r

Specifications of HD6417011VX20V

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: EBI/EMI, SCI
• Peripherals: POR, PWM
• Number Of I /o: 11
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

13.4.3
Input Sampling and A/D Conversion Time
The A/D converter has a built-in sample and hold circuit. The A/D converter samples the analog
input at time t
after the ADST bit is set to 1 in the A/D control/status register (ADCSR), then
D
starts conversion. Figure 13.5 shows the A/D conversion timing, and table 13.4 shows A/D
conversion times.
As shown in figure 13.5, A/D conversion time tCONV consists of A/D conversion start delay time
t
and analog input sampling time t
. The length of tD is not fixed, but is determined by the
D
SPL
timing of the write to ADSCR. The total conversion time therefore varies within the ranges shown
in table 13.4.
In scan mode, the t
values given in table 13.4 apply to the first conversion. In the second and
CONV
subsequent conversions, t
is fixed at 256 states when CKS = 0 or 128 states when CKS = 1.
CONV
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