4501 datasheet(124/212 Pages) RENESAS

124 / 212 page

2.1 I/O pins

2-7

4501 Group

APPLICATION

Rev.2.01

Feb 07, 2005

REJ09B0192-0201

Pull-up control register PU2

at reset : 00002

at RAM back-up : state retained

Pull-up transistor OFF

Pull-up transistor ON

Pull-up transistor OFF

Pull-up transistor ON

Pull-up transistor OFF

Pull-up transistor ON

Pull-up transistor OFF

Pull-up transistor ON

Port D3/K

pull-up transistor control bit

Port D2/C

pull-up transistor control bit

Port P21/AIN1

pull-up transistor control bit

Port P20/AIN0

pull-up transistor control bit

PU23

PU22

PU21

PU20

Note: “W” represents write enabled.

(5)

Key-on wakeup control register K2

Set the contents of this register through register A with the TK2A instruction.

The contents of register K2 is transferred to register A with the TAK2 instruction.

Table 2.1.5 shows the key-on wakeup control register K2.

Table 2.1.5 Key-on wakeup control register K2

Key-on wakeup control register K2

at reset : 00002

at RAM back-up : state retained

R/W

Key-on wakeup invalid

Key-on wakeup valid

Key-on wakeup invalid

Key-on wakeup valid

Key-on wakeup invalid

Key-on wakeup valid

Key-on wakeup invalid

Key-on wakeup valid

Port D3/K

key-on wakeup control bit

Port D2/C

key-on wakeup control bit

Port P21/AIN1

key-on wakeup control bit

Port P20/AIN0

key-on wakeup control bit

K23

K22

K21

K20

Note: “R” represents read enabled, and “W” represents write enabled.

(6)

Pull-up control register PU2

Set the contents of this register through register A with the TPU2A instruction.

Table 2.1.6 shows the pull-up control register PU2.

Table 2.1.6 Pull-up control register PU2

4501 Datasheet(PDF) 124 Page - Renesas Technology Corp

4501 Datasheet(HTML) 124 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