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參數資料
| 型號： | UBA2051AT |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | One-chip telephone ICs with speech, dialler and ringer functions |
| 中文描述： | TELEPHONE MULTIFUNCTION CKT, PDSO28 |
| 封裝： | PLASTIC, SOT-136, SO-28 |
| 文件頁數： | 24/52頁 |
| 文件大小： | 292K |
| 代理商： | UBA2051AT |
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2000 May 19
24
Philips Semiconductors
Product specification
One-chip telephone ICs with speech,
dialler and ringer functions
UBA2050(A); UBA2051(A;C)
Keyboard structure
The UBA205xx supports the keyboard structure given in Fig.25. Pin C4 is not available in the UBA2050x.
For key definitions, see Table 5.
Table 5
Key definitions
Notes
1.
2.
In tone dialling mode.
In pulse dialling mode, when MMS resistor option is off (see Table 7).
KEYS
DEFINITION
[0] to [9] and [#]
(1)
;
[
/T]
(1)
[
/T]
(2)
; [P
→
T]
[LNR/P]
digits; see Table 6
switch over to DTMF dialling (mixed mode dialling)
last number redial if this key is the first key pressed after going off-hook; access pause if
this key is not the first key pressed after going off-hook
direct memories
indirect memory recall
recall (flash function)
memory programming
[M1] to [M3]
[MEM]
[R]
[STORE]
handbook, full pagewidth
FCA139
R
LNR/P
STORE
P->T
0
*
/T
1
4
7
2
3
5
#
M1
M3
M2
MEM
6
9
FTSA
FTSB
MMS
PPS
APT
PTS
MBS
C3
C2
GND
C4
R4
R3
C1
R2
R1
8
Fig.25 Keyboard structure.
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