HD64F3644DV Renesas Electronics America, HD64F3644DV Datasheet - Page 168

• Manufacturer Part Number: HD64F3644DV
• Description: IC H8/3644 MCU FLASH 64QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD64F3644DV

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 6 ROM
Table 6.11 Set Values of #a, #b, #c, and #d for Typical Operating Frequencies when
Meaning of Variable
a ( )
b ( )
c ( )
d ( )
Formula:
If an operating frequency other than those shown in table 6.11 is used, the values can be calculated
using the formula shown below. The calculation is based on an operating frequency ( ) of 5 MHz.
For a ( ) and d ( ), after decimal calculation, round down the first decimal place and convert to
hexadecimal so that a ( ) and d ( ) are 15.8 µs or less and 6.25 ms or less, respectively.
For b ( ) and c ( ), after decimal calculation, round up the first decimal place and convert to
hexadecimal so that b ( ) and c ( ) are 4 µs or more and 2 µs or more, respectively.
Rev. 6.00 Sep 12, 2006 page 146 of 526
REJ09B0326-0600
Programming time
(initial set value)
tvs1
tvs2
Erase time (initial
set value)
a ( ) to d ( ) =
Sample Program Is Executed in On-Chip Memory (RAM)
Operating frequency
Set Time
15.8 µs
4 µs
2 µs
6.25 ms
f
Counter Set
Value
H'000F
H'06
H'03
H'0C34
OSC
= 8 MHz
5
= 16 MHz f
[MHz]
OSC
Counter Set
Value
H'0009
H'04
H'02
H'07A1
Oscillation Frequency
= 5 MHz
Operating Frequency
= 10 MHz f
a ( = 5) to d ( = 5)
Counter Set
Value
H'0007
H'03
H'01
H'061A
OSC
= 4 MHz
= 8 MHz f
Counter Set
Value
H'0001
H'01
H'01
H'0186
OSC
= 1 MHz
= 2 MHz