HD64F3048BF25 Renesas Electronics America, HD64F3048BF25 Datasheet - Page 582

• Manufacturer Part Number: HD64F3048BF25
• Description: IC H8 MCU FLASH 128K 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3048BF25

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K 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-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-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 Sep 27, 2006 page 554 of 872
REJ09B0325-0300
Address bus
Write signal
Input sampling
timing
ADF
Legend:
(1):
(2):
t :
t
t
D
SPL
CONV
Input Sampling and A/D Conversion Time
D
varies depending on the timing of the write access to ADCSR. The total conversion
:
:
ADCSR write cycle
ADCSR address
Synchronization delay
Input sampling time
A/D conversion time
D
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