HD64F36077GHV Renesas Electronics America, HD64F36077GHV Datasheet - Page 117

• 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

5.7
5.7.1
Prescaler S is a 13-bit counter using the system clock ( ) as its input clock. The outputs, which are
divided clocks, are used as internal clocks by the on-chip peripheral modules. 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 external clock oscillator stops. Prescaler S also stops and is initialized to
H'0000. It cannot be read from or written to by the CPU.
The outputs from prescaler S are shared by the on-chip peripheral modules. The division ratio can
be set separately for each on-chip peripheral module. In active mode and sleep mode, the clock
input to prescaler S is a system clock with the division ratio specified by bits MA2 to MA0 in
SYSCR2.
5.7.2
Prescaler W is a 5-bit counter using a 32.768-kHz signal divided by 4 as its input clock. The
divided output is used for clock time base operation of the RTC. Prescaler W is initialized to H'00
by a reset, and starts counting on exit from the reset state. Even in standby mode, subactive mode,
or subsleep mode, prescaler W continues functioning.
Prescaler
Prescaler S
Prescaler W
Rev. 1.00 Sep. 16, 2005 Page 87 of 490
Section 5 Clock Pulse Generator
REJ09B0216-0100