H8S2245 datasheet(16/818 Pages) RENESAS

16 / 818 page

Rev.3.00 Mar. 26, 2007 Page xvi of xlii

REJ09B0355-0300

Item

Page Revision (See Manual for Details)

10.2.3 Time Constant

Registers B0 and B1

(TCORB0, TCORB1)

367

Description amended

... Note, however, that comparison is disabled during the T2 state

of a TCORB write cycle. ...

10.2.5 Timer

Control/Status Registers 0

and 1(TCSR0, TCSR1)

370

Bit 7

Compare Match Flag B (CMFB)

Description amended

[Clearing conditions]

• Cleared by reading CMFB when CMFB = 1, then writing 0 to

CMFB

• When DTC is activated by CMIB interrupt while DISEL bit of

MRB in DTC is 0 with the transfer counter not being 0.

371

Bit 6

Compare Match Flag A (CMFA)

Description amended

[Clearing conditions]

• Cleared by reading CMFA when CMFA = 1, then writing 0 to

CMFA

• When DTC is activated by CMIA interrupt while DISEL bit of

MRB in DTC is 0 with the transfer counter not being 0.

10.6.1 Setting Module

Stop Mode

381

Section 10.6.1 added

11.2.2 Timer

Control/Status Register

(TCSR)

391

Bit 7

Overflow Flag (OVF)

Note

* added

[Clearing condition] Cleared by reading TCSR when OVF = 1,

then writing 0 to OVF

Note:

* When OVF is polled and the interval timer interrupt is

disabled, OVF = 1 must be read at least twice.

11.2.3 Reset

Control/Status Register

(RSTCSR)

393

Bit 7

Watchdog Timer Overflow Flag (WOVF)

Description amended

[Clearing condition] Cleared by reading RSTCSR when WOVF =

1, then writing 0 to WOVF

11.4 Interrupts

400

Description added

... whenever the OVF flag is set to 1 in TCSR. OVF must be

cleared to 0 in the interrupt handling routine.

11.5.6 OVF Flag

Clearing in Interval Timer

Mode

402

Section 11.5.6 added

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