HD64F3672FY Renesas Electronics America, HD64F3672FY Datasheet - Page 93
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HD64F3672FY
Manufacturer Part Number
HD64F3672FY
Description
IC H8 MCU FLASH 16K 48QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300H Tinyr
Datasheet
1.HD64F3672FXV.pdf
(334 pages)
Specifications of HD64F3672FY
Core Processor
H8/300H
Core Size
16-Bit
Speed
16MHz
Connectivity
SCI
Peripherals
PWM, WDT
Number Of I /o
26
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
48-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Part Number:
HD64F3672FY
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5.1.3
Connect an external clock signal to pin OSC
connection. The duty cycle of the external clock signal must be 45 to 55%.
5.2
5.2.1
Prescaler S is a 13-bit counter using the system clock (ø) as its input clock. It is incremented once
per clock period. Prescaler S is initialized to H'0000 by a reset, and starts counting on exit from
the reset state. In standby mode and subsleep mode, the system clock pulse generator stops.
Prescaler S also stops and is initialized to H'0000. The CPU cannot read or write prescaler S.
The output from prescaler S is shared by the on-chip peripheral modules. The divider ratio can be
set separately for each on-chip peripheral function. In active mode and sleep mode, the clock input
to prescaler S is determined by the division factor designated by MA2 to MA0 in SYSCR2.
5.3
5.3.1
Resonator characteristics are closely related to board design and should be carefully evaluated by
the user, referring to the examples shown in this section. Resonator circuit constants will differ
depending on the resonator element, stray capacitance in its interconnecting circuit, and other
factors. Suitable constants should be determined in consultation with the resonator element
manufacturer. Design the circuit so that the resonator element never receives voltages exceeding
its maximum rating.
External Clock Input Method
Prescalers
Prescaler S
Usage Notes
Note on Resonators
Figure 5.6 Example of External Clock Input
OSC
OSC
1
2
1
Open
, and leave pin OSC
External clock input
Rev.4.00 Nov. 02, 2005 Page 67 of 304
2
open. Figure 5.6 shows a typical
Section 5 Clock Pulse Generators
REJ09B0143-0400
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