HD64F3684FP Renesas Electronics America, HD64F3684FP Datasheet - Page 183

• Manufacturer Part Number: HD64F3684FP
• Description: IC H8 MCU FLASH 32K 64LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H Tinyr

Specifications of HD64F3684FP

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI
• Peripherals: PWM, WDT
• Number Of I /o: 45
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

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
Bit Name
—
RCS6
RCS5
—
RCS3
RCS2
RCS1
RCS0
Clock Source Select Register (RTCCSR)
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: /4
01: /8
10: /16
11: /32
Reserved
This bit is always read as 0.
Clock source selection
0000: /8
0001: /32
0010: /128
0011: /256
0100: /512
0101: /2048
0110: /4096
0111: /8192
1XXX: 32.768 kHz
Free running counter operation
Free running counter operation
Free running counter operation
Free running counter operation
Free running counter operation
Free running counter operation
Free running counter operation
Free running counter operation
Rev.5.00 Nov. 02, 2005 Page 149 of 500
RTC operation
Section 10 Realtime Clock (RTC)
REJ09B0027-0500