atam510 ATMEL Corporation, atam510 Datasheet - Page 55
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atam510
Manufacturer Part Number
atam510
Description
Marc4 4-bit Mtp Universal Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.ATAM510.pdf
(72 pages)
- Current page: 55 of 72
- Download datasheet (2Mb)
3.6
3.6.0.8
4711B–4BMCU–01/05
Buzzer Module
Buzzer Control Register (BZCR)
The buzzer is a 4 stage frequency divider which divides the SUBCL and depending on the state
of the Buzzer Control Register (BZCR) can output one of four frequencies. An external piezo or
buzzer can be driven by the complementary buzzer outputs (BUZ and NBUZ) which are directed
to Port 4 (BP42 and BP43) under control of the Timer/Counter I/O Register (TCIOR) as shown in
Figure 3-11 on page
same logical state. This is controlled by the BZOP bit of the BZCR.
Figure 3-27. Buzzer Module
BZFS2,BZFS2
BZOP
BZOF
BZCR
SUBCL
- Buzzer Frequency Select code
- Buzzer Output Stop State
- Buzzer off/on
BZFS2
Bit 3
CK
36. When the buzzer is switched off, both of the buzzer outputs take up the
R
4 stage divider
R
BZFS1
Bit 2
Subport address (indirect write access): 'A'hex of Port address '9'hex
R
BZOP
SUBCL/4 (8 kHz)
SUBCL/8 (4 kHz)
SUBCL/16 (2 kHz)
R
SUBCL (32 kHz)
Bit 1
BZCR
BZOF
Bit 0
MUX
4:1
BZFS2
BZFS1
Reset value: 1111b
BZOP
BZOF
ATAM510
NBUZ
BUZ
55
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