HD64F36077GHV Renesas Electronics America, HD64F36077GHV Datasheet - Page 105
HD64F36077GHV
Manufacturer Part Number
HD64F36077GHV
Description
16BIT MCU FLASH 56K, SMD, LQFP64
Manufacturer
Renesas Electronics America
Datasheet
1.HD64F36077GHV.pdf
(524 pages)
Specifications of HD64F36077GHV
No. Of I/o's
47
Ram Memory Size
4KB
Cpu Speed
20MHz
No. Of Timers
4
Digital Ic Case Style
LQFP
Supply Voltage Range
4.5V
Core Size
16bit
Program Memory Size
56KB
Oscillator Type
External Only
Controller Family/series
H8/300H
Peripherals
ADC
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD64F36077GHV
Manufacturer:
RENESAS
Quantity:
340
Part Number:
HD64F36077GHV
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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5.3
Figure 5.2 shows the state transition of the system clock.
5.3.1
The LSI system clock is generated by the on-chip oscillator clock after a reset. The system clock
sources are switched from the on-chip oscillator to the external clock by the user software. Figure
5.3 shows the flowchart to switch clocks with the external clock backup function enabled. Figures
5.4 and 5.5 show the flowcharts to switch clocks with the external clock backup function disabled.
Note: * Conditions for the state transition are as follows:
On-chip oscillator: Halted
External oscillator: Operated
System Clock Select Operation
Clock Control Operation
Reset state
When the external oscillator halt is detected while the backup function is enabled
When the external clock is switched to the on-chip oscillator clock by user software
while the backup function is disabled
Figure 5.2 State Transition of System Clock
Reset release
Oscillator operated
Oscillator halted
LSI operates on on-chip oscillator clock
LSI operates on external oscillator
Rev. 1.00 Sep. 16, 2005 Page 75 of 490
On-chip oscillator: Operated
External oscillator: Halted
On-chip oscillator: Operated
External oscillator: Operated
Section 5 Clock Pulse Generator
*
Switching to
external clock
REJ09B0216-0100
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