HD64F3644DV Renesas Electronics America, HD64F3644DV Datasheet - Page 128

• 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
6.3.1
An efficient, high-speed, high-reliability method is available for writing and verifying the PROM
data. This method achieves high speed without voltage stress on the device and without lowering
the reliability of written data. Data in unused address areas has a value of H'FF. The basic flow of
this high-speed, high-reliability programming method is shown in figure 6.3.
Rev. 6.00 Sep 12, 2006 page 106 of 526
REJ09B0326-0600
Writing and Verifying
Error
Figure 6.3 High-Speed, High-Reliability Programming Flow Chart
No
n 25
Yes
V
CC
NG
NG
= 6.0 V ±0.25 V, V
V
Write time t
CC
Write time t
= 5.0 V ±0.5 V, V
Set write/verify mode
Set read mode
Last address?
Address = 0
addresses?
n + 1
Read all
PW
Verify
n = 0
Start
End
OPW
= 0.2 ms ±5%
Yes
Yes
OK
PP
n
= 3n ms
= 12.5 V ±0.3 V
PP
= V
CC
No
Address + 1
address