HD64F36077GHV Renesas Electronics America, HD64F36077GHV Datasheet - Page 108

• 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

Section 5 Clock Pulse Generator
Rev. 1.00 Sep. 16, 2005 Page 78 of 490
REJ09B0216-0100
Figure 5.5 Flowchart of Clock Switching with Backup Function Disabled (2)
(LSI operates on external clock)
Write 0 to OSCBAKE in CKCSR
Write 1 to CKSWIE in CKCSR
Write 0 to OSCSEL in CKCSR
Write 0 to PMRC0 in CKCSR
on-chip oscillator clock
LSI operates on
if necessary
if necessary
Start
(From External Clock to On-Chip Oscillator Clock)
When CKSWIE = 1
LSI operates on
on-chip oscillator clock
Exception handling
for clock switching
LSI operates on
external clock
[1]
[2]
[1]
[2]
When 0 is written to the OSCSEL bit, this LSI
switches from the external clock to the on-chip
oscillator clock after a
duration here is the duration while the
rises seven times after the OSCSEL bit becomes
0.
Writing 0 to PMRC0 disables the external
oscillation input.
stop duration. The
RC
clock
halt