1/5 2002-03-04
WIRELESS DOOR CHIME
IC
DOOR CHIME
M1D-BL
GENERAL DESCRIPTION
The M1D-BL is a CMOS ASIC for wireless door bell receiver use. It will receive the RF signal from M1E (ENCODER) and give
a DING-DONG output if address are checked the same..
FEATURES
Same Rosc matched to the ENCODER M1E
2
8
= 256 codes, "0", "1" binary
3 cycles checked each time
BZ : DING-DONG / DING-DING sound
1T : 1 time option (default 2 times)
RC envelop
APPLICATIONS
Wireless door bell, visitor chime etc..
BLOCK DIAGRAM
*All specs and applications shown above subject to change without prior notice.
( , )
Oscillator
Control
Input
X
1T
A7
ENV
Freq
Divider
Logic unit
Control
Output
Driver
Y
DI
Central
A0
VT
BZ
3/5 2002-03-04
WIRELESS DOOR CHIME
IC
DOOR CHIME
M1D-BL
PAD ASSIGNMENT & POSITION
* CHIP SIZE ~ 1.7 x 2.2 mm
2
* IC substrate should be connected to VDD in PCB(PCB IC VDD)
TIMING WAVEFORM
(1) BIT FORMAT
(2) TIMING DIAGRAM
"0"
"OPEN"
UNIT : um
No. NAME
X
Y
1
BZ
635
812
2
DI
425
812
3
X
192
812
4
Y
-639
812
5
VT
-639
534
6
1T
-639
178
7
VDD
-639
-55
8
A0
-639
-265
9
A1
-639
-505
10 A2
-639
-810
11
A3
-126
-810
12 A4
107
-810
13 A5
402
-810
14 A6
635
-810
15 A7
635
-600
16 VSS
635
-367
17 TEST
635
-157
18 ENV
635
76
DI
VT
BZ
4 WORDS
4 WORDS
4 WORDS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
X
Y