7702 datasheet(95/217 Pages) RENESAS

95 / 217 page

TIMER A

7702/7703 Group User’s Manual

5–7

5.2 Block description

5.2.4 Timer Ai interrupt control register

Figure 5.2.4 shows the structure of the timer Ai interrupt control register. For details about interrupts, refer

to “Chapter 4. INTERRUPTS.”

Fig. 5.2.4 Structure of timer Ai interrupt control register

(1)

Interrupt priority level select bits (bits 2 to 0)

These bits select a timer Ai interrupt’s priority level. When using timer Ai interrupts, select priority

levels 1 to 7. When a timer Ai interrupt request occurs, its priority level is compared with the

processor interrupt priority level (IPL), so that the requested interrupt is enabled only when its priority

level is higher than the IPL. (However, this applies when the interrupt disable flag (I) = “0.”) To

disable timer Ai interrupts, set these bits to “0002” (level 0).

(2)

Interrupt request bit (bit 3)

This bit is set to “1” when the timer Ai interrupt request occurs. This bit is automatically cleared to

“0” when the timer Ai interrupt request is accepted. This bit can be set to “1” or “0” by software.

Bit

7 to 4

Interrupt request bit

Bit name

At reset

Functions

0 0 0 : Level 0 (Interrupt disabled)

0 0 1 : Level 1

Low level

0 1 0 : Level 2

0 1 1 : Level 3

1 0 0 : Level 4

1 0 1 : Level 5

1 1 0 : Level 6

1 1 1 : Level 7

High level

b2 b1 b0

0 : No interrupt request

1 : Interrupt request

Interrupt priority level select bits

–

Undefined

Nothing is assigned.

Note: Use the SEB or CLB instruction to set each interrupt control register.

Timer Ai interrupt control registers (i = 0 to 4) (Addresses 7516 to 7916)

7702 Datasheet(PDF) 95 Page - Renesas Technology Corp

7702 Datasheet(HTML) 95 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