HD64F36077GHV Renesas Electronics America, HD64F36077GHV Datasheet - Page 197

• 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

10.3.7
RTCCSR selects clock source. A free running counter controls start/stop of counter operation by
the RUN bit in RTCCR1. When a clock other than 32.768 kHz is selected, the RTC is disabled
and operates as an 8-bit free running counter. When the RTC operates as an 8-bit free running
counter, RSECDR enables counter values to be read. An interrupt can be generated by setting 1 to
the FOIE bit in RTCCR2 and enabling an overflow interrupt of the free running counter. A clock
in which the system clock is divided by 32, 16, 8, or 4 is output in active or sleep mode.
[Legend] X: Don't care.
Bit
7
6
5
4
3
2
1
0
Clock Source Select Register (RTCCSR)
Bit Name
—
RCS6
RCS5
—
RCS3
RCS2
RCS1
RCS0
Initial
Value
0
0
0
0
1
0
0
0
R/W
—
R/W
R/W
—
R/W
R/W
R/W
R/W
Description
Reserved
This bit is always read as 0.
Clock Output Selection
Selects a clock output from the TMOW pin when setting
TMOW in PMR1 to 1.
00: φ/4
01: φ/8
10: φ/16
11: φ/32
Reserved
This bit is always read as 0.
Clock Source Selection
0000: φ/8⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ Free running counter operation
0001: φ/32⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ Free running counter operation
0010: φ/128⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ Free running counter operation
0011: φ/256⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ Free running counter operation
0100: φ/512⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ Free running counter operation
0101: φ/2048⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ Free running counter operation
0110: φ/4096⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ Free running counter operation
0111: φ/8192⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ Free running counter operation
1XXX: 32.768 kHz⋅⋅⋅RTC operation
Rev. 1.00 Sep. 16, 2005 Page 167 of 490
Section 10 Realtime Clock (RTC)
REJ09B0216-0100