HD64F36077GHV Renesas Electronics America, HD64F36077GHV Datasheet - Page 109

• Manufacturer Part Number: HD64F36077GHV
• Description: 16BIT MCU FLASH 56K, SMD, LQFP64
• Manufacturer: Renesas Electronics America

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

5.3.2
The timing for switching clocks are shown in figures 5.6 to 5.8.
Figure 5.6 Timing Chart of Switching from On-Chip Oscillator Clock to External Clock
(Internal signal)
[Legend]
OSCSEL: Bit 4 in CKCSR
PHISTOP: System clock stop control signal
CKSTA:
Note: * The
OSC:
RC:
:
Clock Switching Timing
PHISTOP
OSCSEL
On-chip oscillator clock operation
CKSTA
OSC
RC
rising edge of the
External clock
On-chip oscillator clock
System clock
Bit 0 in CKCSR
halt duration is the duration from the timing when the
Wait for external
oscillation settling
Nwait
OSC
clock after seven clock cycles of the
halt*
Rev. 1.00 Sep. 16, 2005 Page 79 of 490
Section 5 Clock Pulse Generator
External clock operation
RC
clock stops to the first
clock have elapsed.
REJ09B0216-0100