SH7706 Datasheet, PDF (16/749 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family/SH7700 Series

Item
Page
10.3 Clock Operating 308,
Modes
309
Table 10.3 Available
Combination of Clock
Mode and FRQCR
Values
10.3 Clock Operating 309
Modes
Cautions:
10.6 Usage Note
313
When Using a PLL
Oscillator Circuit:
13.3.15 RTC Control 352
Register 1 (RCR1)
13.4.2 Setting the
Time
356,
357
Revision (See Manual for Details)
Table amended and note 1 added
Clock
Mode FRQCR^*1 PLL1
PLL2
Clock Rate^*2
CKIO Frequency
(I:B:P)
Input Frequency Range Range
Notes: 1. This LSI cannot operate in an FRQCR value other
than that listed in table 10.3.
2. Taking input clock as 1
Max. frequency: Iφ = 133.34 MHz, Bφ (CKIO) = 66.67 MHz,
Pφ = 33.34 MHz
Item 4 amended
• The peripheral clock frequency should not be set higher than
the frequency of the CKIO pin, or higher than 33 MHz.
Description amended
… In clock mode 7, connect the EXTAL pin to V Q or V Q
CC
SS
and leave the XTAL pin open.
Description and table amended
RTC control register 1 (RCR1) affects carry flags and alarm
flags. It also selects whether to generate interrupts for each
flag. Because flags are sometimes set after an operand read,
do not use this register in read-modify-write processing.
RCR1 is an 8-bit read/write register. Bits CIE, AIE, and AF are
initialized by a power-on reset or manual reset. After a power-
on reset or manual reset, however, the CF flag is undefined.
When using the CF flag, it must be initialized beforehand. This
register is not initialized in standby mode.
Bit Bit Name Initial Value R/W Description
7
CF
—
R/W Carry Flag
Status flag that indicates that a carry has occurred. CF
is set to 1 when a count-up to R64CNT or RSECCNT
occurs. A count register value read at this time cannot
be guaranteed; another read is required.
0: No count up of R64CNT or RSECCNT.
[Clearing condition]
When 0 is written to CF
1: Count up of R64CNT or RSECCNT.
[Setting condition]
When 1 is written to CF
Replaced
Rev. 5.00 May 29, 2006 page xvi of xlviii