7540 datasheet(327/366 Pages) RENESAS

327 / 366 page

3-105

REJ09B0018-0200Z

Rev.2.00

Jun 21, 2004

7540 Group

APPENDIX

3.5 List of registers

Fig. 3.5.13 Structure of Timer A register

Fig. 3.5.14 Structure of Timer Y, Z mode register

Timer A register (low-order, high-order)

b7 b6 b5 b4 b3 b2 b1 b0

Function

At reset

Timer A register (low-order, high-order) (TAL, TAH) [Address : 1E 16, 1F16]

•Set a count value of timer A.

•The value set in this register is written to both timer A and timer A

latch at the same time.

•When this register is read out, the timer A’s count value is read

out.

Notes 1: Be sure to write to/read out both the low-order of timer A (TAL) and the high-

order of timer A (TAH).

2: Read the high-order of timer A (TAH) first, and the high-order of timer A (TAL) next.

3: Write to the low-order of timer A (TAL) first, and the high-order of timer A (TAH) next.

4: Do not write to them during read, and do not read out them during write.

Timer Y, Z mode register

b7 b6 b5 b4 b3 b2 b1 b0

Function

At reset

Name

Nothing is allocated for this bit. This is a write disabled bit.

When this bit is read out, the value is “0”.

Timer Y, Z mode register (TYZM) [Address : 20 16)

Timer Y operating mode bit

0 : Timer mode

1 : Programmable waveform

generation mode

Timer Y write control bit

(Note)

0 : Write to latch and timer

simultaneously

1 : Write to only latch

Timer Y count stop bit

0 : Count start

1 : Count stop

Timer Z operating mode bits

b5 b4

0 0 : Timer mode

0 1 : Programmable waveform

generation mode

1 0 : Programmable one-shot

generation mode

1 1 : Programmable wait one-shot

generation mode

Timer Z write control bit

(Note)

0 : Write to latch and timer

simultaneously

1 : Write to only latch

Timer Z count stop bit

0 : Count start

1 : Count stop

Note: When modes other than the timer mode, set these bits to “1”.

7540 Datasheet(PDF) 327 Page - Renesas Technology Corp

7540 Datasheet(HTML) 327 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