D12312SVTE25 Renesas Electronics America, D12312SVTE25 Datasheet - Page 579

• Manufacturer Part Number: D12312SVTE25
• Description: MCU 3V 0K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12312SVTE25

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: HD6412312SVTE25; HD6412312SVTE25

14.4.3
The A/D converter has a built-in sample-and-hold circuit. The A/D converter samples the analog
input at a time t
conversion timing. Table 14.4 indicates the A/D conversion time.
As indicated in figure 14.5, the A/D conversion time includes t
length of t
time therefore varies within the ranges indicated in table 14.4.
In scan mode, the values given in table 14.4 apply to the first conversion time. In the second and
subsequent conversions the conversion time is as shown in table 14.5.
Input Sampling and A/D Conversion Time
D
φ
Input sampling
timing
ADF
Address bus
Write signal
varies depending on the timing of the write access to ADCSR. The total conversion
Legend:
(1):
(2):
t
t
t
D
SPL
CONV
:
D
after the ADST bit is set to 1, then starts conversion. Figure 14.5 shows the A/D
:
: A/D conversion time
ADCSR write cycle
ADCSR address
A/D conversion start delay
Input sampling time
(1)
(2)
Figure 14.5 A/D Conversion Timing
t
D
Section 14 A/D Converter (8 Analog Input Channel Version)
t
SPL
t
CONV
Rev.7.00 Feb. 14, 2007 page 545 of 1108
D
and the input sampling time. The
REJ09B0089-0700