HD64F36077GHV Renesas Electronics America, HD64F36077GHV Datasheet - Page 394

• Manufacturer Part Number: HD64F36077GHV
• Description: 16BIT MCU FLASH 56K, SMD, LQFP64
• Manufacturer: Renesas Electronics America

Specifications of HD64F36077GHV

• No. Of I/o's: 47
• Ram Memory Size: 4KB
• Cpu Speed: 20MHz
• No. Of Timers: 4
• Digital Ic Case Style: LQFP
• Supply Voltage Range: 4.5V
• Core Size: 16bit
• Program Memory Size: 56KB
• Oscillator Type: External Only
• Controller Family/series: H8/300H
• Peripherals: ADC
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Section 18 A/D Converter
18.4.3
The A/D converter has a built-in sample-and-hold circuit. The A/D converter samples the analog
input when the A/D conversion start delay time (t
starts conversion. Figure 18.2 shows the A/D conversion timing. Table 18.3 shows the A/D
conversion time.
As indicated in figure 18.2, the A/D conversion time includes t
length of t
time therefore varies within the ranges indicated in table 18.3.
In scan mode, the values given in table 18.3 apply to the first conversion time. In the second and
subsequent conversions, the conversion time is 128 states (fixed) when CKS = 0 and 66 states
(fixed) when CKS = 1.
Rev. 1.00 Sep. 16, 2005 Page 364 of 490
REJ09B0216-0100
Input Sampling and A/D Conversion Time
D
varies depending on the timing of the write access to ADCSR. The total conversion
Address
Write signal
Input sampling
timing
ADF
φ
[Legend]
(1):
(2):
t
t
t
D
SPL
CONV
:
:
:
A/D conversion start delay time
Input sampling time
A/D conversion time
ADCSR write cycle
ADCSR address
Figure 18.2 A/D Conversion Timing
(1)
(2)
t
D
t
SPL
D
) has passed after the ADST bit is set to 1, then
t
CONV
D
and the input sampling time. The