STM8A/128-EVAL STMicroelectronics, STM8A/128-EVAL Datasheet - Page 11

• Manufacturer Part Number: STM8A/128-EVAL
• Description: 8 BITS MICROCONTR
• Manufacturer: STMicroelectronics
• Series: STM8Ar
• Type: MCUr

Specifications of STM8A/128-EVAL

• Contents: Board
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: STM8A

UM0944
2.3
2.4
Reset source
The reset signal of STM8A/128-EVAL evaluation board is low active and the reset sources
include:
The reset pin PA0 of STM8Axx is connected either to Reset button B1 or to GND by setting
the jumper JP1 as described in
Table 2.
Audio
The STM8A/128-EVAL evaluation board supports both audio recording and playback. This
can be disabled or enabled by setting the jumpers JP4 and JP5. Audio volume can be
adjusted using the potentiometer RV2, while the microphone amplifier gain can be adjusted
using potentiometer RV3.
The beeper function pin PD4 is connected to the speaker via the JP14 jumper which can be
used to select the source, beeper or PWM output from STM8Axx.
Table 3.
JP1
JP4
JP5
JP14
Jumper
Jumper
Reset button B1
Debugging Tools from connector CN4
Daughterboard from CN5
Reset related jumpers
Audio related jumpers
PA0 is connected to GND when JP1 is set as shown. It is used to
maintain the reset pin at low level while STice is connected to the
board.
PA0 is connected to Reset button when JP1 is set as shown.
This is the default setting.
The audio power amplifier TS4871 is forced into standby mode when JP4 is not
fitted.
Default setting: fitted
The microphone pre-amplifier MAX4061 is forced into shutdown mode when JP5 is
fitted.
Default setting: not fitted
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Either beeper or PWM output can be selected as a source of
speaker by setting the jumper JP14. The beeper is connected to
speaker when JP14 is set as shown opposite.
The PWM output is connected to speaker when JP14 is set as
shown opposite.
This is the default setting.
Doc ID 17489 Rev 1
Table
2.
Description
Description
Hardware layout and configuration
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