7540 datasheet(120/366 Pages) RENESAS

120 / 366 page

2-44

REJ09B0018-0200Z

Rev.2.00

Jun 21, 2004

APPLICATION

7540 Group

2.4 Timer X

Fig. 2.4.7 Structure of Timer count source set register

b7b6b5b4b3b2b1b0

Function

At reset

Name

Timer count source set register (TCSS) [Address : 2E16]

Nothing is allocated for these bits. These are write disabled bits.

When these bits are read out, the values are “0”.

Timer count source set register

Timer X count source

selection bits

b1 b0

0 0 : f(XIN)/16

0 1 : f(XIN)/2

1 0 : f(XIN) (Note 1)

1 1 : Not available

Timer Y count source

selection bits

Timer Z count source

selection bits

Notes 1: f(XIN) can be used as timer X count source only when using a ceramic oscillator

or on-chip oscillator.

Do not use it at RC oscillation.

2: System operates using an on-chip oscillator as a count source by setting the

on-chip oscillator to oscillation enabled by bit 3 of CPUM.

Fix this bit to “0”.

b5 b4

0 0 : f(XIN)/16

0 1 : f(XIN)/2

1 0 : Timer Y underflow

1 1 : Not available

b3 b2

0 0 : f(XIN)/16

0 1 : f(XIN)/2

1 0 : On-chip oscillator output

(Note 2)

1 1 : Not available

7540 Datasheet(PDF) 120 Page - Renesas Technology Corp

7540 Datasheet(HTML) 120 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