HD64F3687GH Renesas Electronics America, HD64F3687GH Datasheet - Page 136
HD64F3687GH
Manufacturer Part Number
HD64F3687GH
Description
IC H8 MCU FLASH 56K 64-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300H Tinyr
Datasheet
1.HD64F3684GFPV.pdf
(538 pages)
Specifications of HD64F3687GH
Core Processor
H8/300H
Core Size
16-Bit
Speed
20MHz
Connectivity
I²C, SCI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
45
Program Memory Size
56KB (56K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
64-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Section 7 ROM
Table 7.4
Table 7.5
Table 7.6
Note: Time shown in s.
7.4.2
When erasing flash memory, the erase/erase-verify flowchart shown in figure 7.4 should be
followed.
1. Prewriting (setting erase block data to all 0s) is not necessary.
2. Erasing is performed in block units. Make only a single-bit specification in the erase block
3. The time during which the E bit is set to 1 is the flash memory erase time.
4. The watchdog timer (WDT) is set to prevent overerasing due to program runaway, etc. An
Rev.5.00 Nov. 02, 2005 Page 102 of 500
REJ09B0027-0500
Program Data
0
0
1
1
Reprogram Data
0
0
1
1
n
(Number of Writes)
1 to 6
7 to 1,000
register (EBR1). To erase multiple blocks, each block must be erased in turn.
overflow cycle of approximately 19.8 ms is allowed.
Erase/Erase-Verify
Reprogram Data Computation Table
Additional-Program Data Computation Table
Programming Time
Verify Data
0
1
0
1
Verify Data
0
1
0
1
Programming
Time
30
200
Reprogram Data
1
0
1
1
Additional-Program
Data
0
1
1
1
In Additional
Programming
10
Comments
Programming completed
Reprogram bit
Remains in erased state
Comments
Additional-program bit
No additional programming
No additional programming
No additional programming
Comments
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