HD6433635SW datasheet(187/418 Pages) RENESAS

187 / 418 page

173

Bits 2 to 0—Clock Select L (CKSL2 to CKSL0): Bits 2 to 0 select the input to TCFL from four

internal clock signals or external event input.

Bit 2: CKSL2

Bit 1: CKSL1

Bit 0: CKSL0

Description

External event (TMIF). Rising or falling edge

is counted (see note).

(initial value)

Internal clock: ø/32

Internal clock: ø/16

Internal clock: ø/4

Internal clock: ø/2

*: Don’t care

Note: The edge of the external event signal is selected by bit IEG3 in the IRQ edge select register

(IEGR). See 3.3.2, Interrupt Control Registers, for details on the IRQ edge select register.

Note that switching the TMIF pin function by changing bit IRQ3 in port mode register 1

(PMR1) from 0 to 1 or from 1 to 0 while the TMIF pin is at the low level may cause the timer

F counter to be incremented.

Timer Control/Status Register F (TCSRF)

Bit

76543210

OVFH

CMFH

OVIEH

CCLRH

OVFL

CMFL

OVIEL

CCLRL

Initial value

00000000

Read/Write

R/W

TCSRF is an 8-bit read/write register. It is used for counter clear selection, overflow and compare

match indication, and enabling of interrupts caused by timer overflow.

Upon reset, TCSRF is initialized to H'00.

Bit 7—Timer Overflow Flag H (OVFH): Bit 7 is a status flag indicating TCFH overflow (H'FF

to H'00). This flag is set by hardware and cleared by software. It cannot be set by software.

Bit 7: OVFH

Description

[Clearing conditions]

(initial value)

After reading OVFH = 1, cleared by writing 0 to OVFH

[Setting conditions]

Set when the value of TCFH goes from H'FF to H'00

HD6433635SW Datasheet(PDF) 187 Page - Renesas Technology Corp

HD6433635SW Datasheet(HTML) 187 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL