HD64F3642AH Renesas Electronics America, HD64F3642AH Datasheet - Page 167
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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Loop Counter and Watchdog Timer Overflow Interval Settings in Programs: The settings of
#a, #b, #c, #d, and #e in the program examples depend on the clock frequency. Sample loop
counter settings for typical operating frequencies are shown in table 6.11. The value of #e should
be set as indicated in table 6.12.
As software loops are used, there is intrinsic error, and the calculated value and actual time may
not be the same. Therefore, initial values should be set so that the total write time does not exceed
1 ms, and the total erase time does not exceed 30 s.
The maximum number of writes in the program examples is set as N = 6.
Write and erase operations as shown in the flowcharts are achieved by setting the values of #a, #b,
#c, and #d in the program examples as indicated in table 6.11. Use the settings shown in table 6.12
for the value of #e.
In these sample programs, wait state insertion is disabled. If wait states are used, the setting should
be made after the end of the program.
The set value for the watchdog timer (WDT) overflow time is calculated on the basis of the
number of instructions including the write time and erase time from the time the watchdog timer is
started until it stops. Therefore, no other instructions should be added between starting and
stopping of the watchdog timer in these programs.
EOWARI:
ABEND2:
.DATA.W
.DATA.W
.DATA.W
.DATA.W
H'2000
H'4000
H'6000
H'8000
; LB1
; LB2
; LB3
; FLASH END
;
;
End of erase
Erase error
Rev. 6.00 Sep 12, 2006 page 145 of 526
REJ09B0326-0600
Section 6 ROM
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