HD64F36077GHV Renesas Electronics America, HD64F36077GHV Datasheet - Page 102

• 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
5.2.4
CKCSR selects the port C function, controls switching the system clocks, and indicates the system
clock state.
Rev. 1.00 Sep. 16, 2005 Page 72 of 490
REJ09B0216-0100
Bit
7
6
5
Clock Control/Status Register (CKCSR)
Bit Name
PMRC1
PMRC0
OSCBAKE 0
Initial
Value
0
0
R/W
R/W
R/W
R/W
Description
Port C Function Select 1 and 2
External Clock Backup Enable
0: External clock backup disabled
1: External clock backup enabled
The external oscillation detecting circuit is enabled when
this bit is 1. When the external oscillator halt is detected
while this LSI operates on the external input signal, the
system clock source is automatically switched to the on-
chip oscillator regardless of the value of bit 4 in this
register.
Note: The external oscillation detecting circuit operates
PMRC1
0
1
0
1
on the on-chip oscillator clock. When this bit is set
to 1, do not set the on-chip oscillator to the standby
mode by the RCSTP bit in RCCR.
PMRC0
0
0
1
1
PC1
I/O
CLKOUT I/O
I/O
OSC2
PC0
I/O
OSC1 (external
clock input)
OSC1