HD64F36077GHV Renesas Electronics America, HD64F36077GHV Datasheet - Page 98

• 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
5.1
5.2
The CPG has the following registers.
Rev. 1.00 Sep. 16, 2005 Page 68 of 490
REJ09B0216-0100
Choice of two clock sources
On-chip oscillator clock
Clock by an external oscillator output
Choice of two types of RC oscillation frequency by the user software
16 MHz
20 MHz
Frequency trimming
Since the initial frequency of the on-chip oscillator in the flash memory version is within the
range of two frequencies shown above, it is normally unnecessary to trim the frequency. It is,
however, still possible to adjust it by rewriting the trimming registers.
Backup of the external oscillation halt
This system detects the external oscillator halt. If detected, the system clock source is
automatically switched to the on-chip oscillator clock.
Interrupt can be requested to the CPU when the system clock is switched from the external
clock to the on-chip oscillator clock.
RC control register (RCCR)
RC trimming data protect register (RCTRMDPR)
RC trimming data register (RCTRMDR)
Clock control/status register (CKCSR)
Features
Register Descriptions