R0K572030S000BE Renesas Electronics America, R0K572030S000BE Datasheet - Page 750
R0K572030S000BE
Manufacturer Part Number
R0K572030S000BE
Description
KIT DEV FOR SH7203
Manufacturer
Renesas Electronics America
Series
Renesas Starter Kits (RSK)r
Type
MCUr
Specifications of R0K572030S000BE
Contents
CPU Board, LCD Module, E10A-Lite Emulator, Cable, QuickStart Guide and CD-ROM
Silicon Manufacturer
Renesas
Kit Contents
Board
Silicon Family Name
SH7203
Silicon Core Number
R5S72030W200FP
Tool / Board Applications
General Purpose MCU, MPU, DSP, DSC
Mcu Supported Families
SH7203
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
SH7203
Lead Free Status / Rohs Status
Compliant
- Current page: 750 of 1686
- Download datasheet (10Mb)
Section 14 Realtime Clock (RTC)
14.5
14.5.1
The following RTC registers cannot be written to during an RTC count (while bit 0 = 1 in RCR2).
RSECCNT, RMINCNT, RHRCNT, RDAYCNT, RWKCNT, RMONCNT, RYRCNT
The RTC count must be stopped before writing to any of the above registers.
14.5.2
The method of using the periodic interrupt function is shown in figure 14.5.
A periodic interrupt can be generated periodically at the interval set by bits PES2 to PES0 in
RCR2. When the time set by bits PES2 to PES0 has elapsed, the PEF is set to 1.
The PEF is cleared to 0 upon periodic interrupt generation or when bits PES2 to PES0 are set.
Periodic interrupt generation can be confirmed by reading this bit, but normally the interrupt
function is used.
14.5.3
When a transition to standby mode is made after registers in the RTC are set, sometimes counting
is not performed correctly. In case the registers are set, be sure to make a transition to standby
mode after performing one dummy read the register.
Rev. 3.00 Sep. 28, 2009 Page 718 of 1650
REJ09B0313-0300
Usage Notes
Register Writing during RTC Count
Use of Real-time Clock (RTC) Periodic Interrupts
Transition to Standby Mode after Setting Register
Figure 14.5 Using Periodic Interrupt Function
Elapse of time set by PES
Set PES, clear PEF
Clear PEF
Set PES2 to PES0
and clear PEF to 0
in RCR2
Clear PEF to 0
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