Renesas RX Series User Manual

R01UH0823EJ0100 Rev.1.00 Page 802 of 1823
Jul 31, 2019
RX23W Group 28. Realtime Clock (RTCe)
(3) Carry interrupt (CUP)
This interrupt is generated when a carry to the second counter/binary counter 0 occurred or a carry to the R64CNT
counter occurred during read access to the 64-Hz counter.
Figure 28.12 Carry Interrupt (CUP) Timing Chart
64 Hz
1 Hz
Interrupt
Interrupt generated by the simultaneous
occurrence of the selected edge of the
64-Hz signal and register reading
R64CNT
signal
64-Hz signal in R64CNT
Detection of the selected
edge of the 64-Hz signal
Register reading by the CPU
Interrupt
(the IR flag corresponding to
the CUP interrupt
*1
)
Detail
R64CNT
Rising edges of the R64CNT signals
are detected in the same way.
An interrupt is generated by a
carry to the second counter/
binary counter 0
Interrupt generated by the simultaneous occurrence of
the edge of the 64-Hz signal and reading of R64CNT
Note 1. Refer to the Interrupt Controller section for details on the corresponding interrupt vector number.

Renesas RX Series Specifications

General

Core	RXv1, RXv2, RXv3
Flash Memory	Up to 8 MB
RAM	Up to 1 MB
Operating Voltage	1.62V to 5.5V
Operating Temperature	-40°C to +85°C or +105°C
Package	BGA, LQFP
ADC Resolution	12-bit
DAC Resolution	12-bit
Communication Interfaces	SCI, SPI, I2C, USB, Ethernet, CAN
Architecture	32-bit
Security Features	Memory Protection Unit (MPU)