HD64F3642AH Renesas Electronics America, HD64F3642AH Datasheet - Page 169
HD64F3642AH
Manufacturer Part Number
HD64F3642AH
Description
IC H8 MCU FLASH 16K 64QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Lr
Datasheet
1.HD64F3644HV.pdf
(551 pages)
Specifications of HD64F3642AH
Core Processor
H8/300L
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI
Peripherals
PWM, WDT
Number Of I /o
53
Program Memory Size
16KB (16K 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
-20°C ~ 75°C
Package / Case
64-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Examples:
Sample calculations when executing a program in on-chip memory (RAM) at an operating
frequency of 6 MHz
Table 6.12 Watchdog Timer Overflow Interval Settings (Set Value of #e for Operating
Variable
e ( )
6.7.7
Prewrite-verify mode is a verify mode used to all bits to equalize their threshold voltages before
erasure.
To program all bits, write H'00 in accordance with the prewrite algorithm shown in figure 6.15.
Use this procedure to set all data in the flash memory to H'00 after programming. After the
necessary programming time has elapsed, exit program mode (by clearing the P bit to 0) and select
prewrite-verify mode (leave the P, E, PV, and EV bits all cleared to 0). In prewrite-verify mode, a
prewrite-verify voltage is applied to the memory cells at the read address. If the flash memory is
read in this state, the data at the read address will be read. After selecting prewrite-verify mode,
wait at least 4 µs before reading.
Note: For a sample prewriting program, see the prewrite subroutine in the sample erasing
program.
a ( ) =
b ( ) =
c ( ) =
d ( ) =
Prewrite-Verify Mode
Frequencies)
6
5
6
5
6
5
6
5
1953 = 2343.6
f
H'9B
OSC
2
4
= 8 MHz
9 = 10.8
= 16 MHz
=
=
2.4
4.8
2343 = H'0927
10 = H'000A
3
5
f
H'DF
OSC
= 5 MHz
= H'03
= H'05
= 10 MHz
Oscillation Frequency
Operating Frequency
Rev. 6.00 Sep 12, 2006 page 147 of 526
f
H'E5
OSC
= 4 MHz
= 8 MHz
REJ09B0326-0600
f
H'F7
OSC
= 1 MHz
Section 6 ROM
= 2 MHz
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