DF3052BX25V Renesas Electronics America, DF3052BX25V Datasheet - Page 564

• Manufacturer Part Number: DF3052BX25V
• Description: MCU 5V 512K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3052BX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 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: Lead free / RoHS Compliant
• Eeprom Size: -

Section 15 A/D Converter
15.4.3
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 15.4 indicates the A/D conversion time.
As indicated in figure 15.5, the A/D conversion time includes t
length of t
time therefore varies within the ranges indicated in table 15.4.
In scan mode, the values given in table 15.4 apply to the first conversion. In the second and
subsequent conversions the conversion time is fixed at 256 states when CKS = 0 or 128 states
when CKS = 1.
Rev. 3.00 Mar 21, 2006 page 534 of 814
REJ09B0302-0300
Input Sampling and A/D Conversion Time
D
Address bus
Write signal
Input sampling
timing
ADF
Legend:
(1):
(2):
t :
t
t
D
SPL
CONV
varies depending on the timing of the write access to ADCSR. The total conversion
:
:
D
ADCSR write cycle
ADCSR address
Synchronization delay
Input sampling time
A/D conversion time
after the ADST bit is set to 1, then starts conversion. Figure 15.5 shows the A/D
(1)
(2)
t
D
Figure 15.5 A/D Conversion Timing
t
SPL
t
CONV
D
and the input sampling time. The