em78p5842 ELAN Microelectronics Corp, em78p5842 Datasheet - Page 37
![no-image](/images/manufacturer_photos/0/2/215/elan_microelectronics_corp_sml.jpg)
em78p5842
Manufacturer Part Number
em78p5842
Description
8-bit Micro-controller
Manufacturer
ELAN Microelectronics Corp
Datasheet
1.EM78P5842.pdf
(45 pages)
- Current page: 37 of 45
- Download datasheet (588Kb)
POR reset voltage is influenced in process or temperature. For some application, a constant reset voltage is
important. Next circuit will support a adjust reset voltage. By adjusting R41 and R46, POR reset voltage will be a
constant (Vpor) and the potential on /RESET pin will drop to 0 when VDD drop to below Vpor. Next plot show
the relative between VDD and Vpor. When R41 = 3.9M ohm and R46 = 910K ohm, /RESET will keep to 0 if
VDD is below 2.24V and will active after VDD upper to 2.1V.
__________________________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
VDD
2.24V
910K
2.1V
3M9
R41
R46
VDD
Fig 17: The relative between VDD and Vpor
Fig 16: External power on reset circuit 2
22M
R44
2M2
C1815
R42
Q3
330K
C1815
R43
35
Q2
104
C31
S10
/RESET
VDD
RESET
RESET
T
EM785840/5841/5842
8-bit Micro-controller
2004/11/10 V1.2
Related parts for em78p5842
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![EM91410BP](/images/manufacturer_photos/0/2/215/elan_microelectronics_corp_tmb.jpg)
Part Number:
Description:
Tone/pulse switchable dialer with LCD interface and dual tone melody generator
Manufacturer:
ELAN Microelectronics Corp
Datasheet:
![EM91215CK](/images/manufacturer_photos/0/2/215/elan_microelectronics_corp_tmb.jpg)
Part Number:
Description:
Tone/pulse switchable dialer with LCD interface
Manufacturer:
ELAN Microelectronics Corp
Datasheet:
![EM91410CK](/images/manufacturer_photos/0/2/215/elan_microelectronics_corp_tmb.jpg)
Part Number:
Description:
Tone/pulse switchable dialer with LCD interface and dual tone melody generator
Manufacturer:
ELAN Microelectronics Corp
Datasheet:
![HM91710B](/images/manufacturer_photos/0/2/215/elan_microelectronics_corp_tmb.jpg)
Part Number:
Description:
Manufacturer:
ELAN Microelectronics Corp
Datasheet:
![EM91420CK](/images/manufacturer_photos/0/2/215/elan_microelectronics_corp_tmb.jpg)
Part Number:
Description:
Tone/pulse switchable dialer with LCD interface and dual-tone melody generator
Manufacturer:
ELAN Microelectronics Corp
Datasheet:
![EM91403CK](/images/manufacturer_photos/0/2/215/elan_microelectronics_corp_tmb.jpg)
Part Number:
Description:
Tone/pulse switchable dialer with LCD interface and dual tone melody generator
Manufacturer:
ELAN Microelectronics Corp
Datasheet:
![EM91410DK](/images/manufacturer_photos/0/2/215/elan_microelectronics_corp_tmb.jpg)
Part Number:
Description:
Tone/pulse switchable dialer with LCD interface and dual tone melody generator
Manufacturer:
ELAN Microelectronics Corp
Datasheet:
![EM91415AP](/images/manufacturer_photos/0/2/215/elan_microelectronics_corp_tmb.jpg)
Part Number:
Description:
Tone/pulse switchable dialer with LCD interface and dual tone melody generator
Manufacturer:
ELAN Microelectronics Corp
Datasheet:
![EM91465CK](/images/manufacturer_photos/0/2/215/elan_microelectronics_corp_tmb.jpg)
Part Number:
Description:
Tone/pulse switchable dialer with LCD interface and IPP detect function
Manufacturer:
ELAN Microelectronics Corp
Datasheet:
![EM91415BP](/images/manufacturer_photos/0/2/215/elan_microelectronics_corp_tmb.jpg)
Part Number:
Description:
Tone/pulse switchable dialer with LCD interface and dual tone melody generator
Manufacturer:
ELAN Microelectronics Corp
Datasheet:
![EM91455CK](/images/manufacturer_photos/0/2/215/elan_microelectronics_corp_tmb.jpg)
Part Number:
Description:
Tone/pulse switchable dialer with LCD interface and IPP detect function
Manufacturer:
ELAN Microelectronics Corp
Datasheet:
![EM91401DK](/images/manufacturer_photos/0/2/215/elan_microelectronics_corp_tmb.jpg)
Part Number:
Description:
Tone/pulse switchable dialer with LCD interface and dual tone melody generator
Manufacturer:
ELAN Microelectronics Corp
Datasheet:
![EM91401CP](/images/manufacturer_photos/0/2/215/elan_microelectronics_corp_tmb.jpg)
Part Number:
Description:
Tone/pulse switchable dialer with LCD interface and dual tone melody generator
Manufacturer:
ELAN Microelectronics Corp
Datasheet:
![EM91450BP](/images/manufacturer_photos/0/2/215/elan_microelectronics_corp_tmb.jpg)
Part Number:
Description:
Tone/pulse switchable dialer with LCD interface and IPP detect function
Manufacturer:
ELAN Microelectronics Corp
Datasheet:
![EM91420BP](/images/manufacturer_photos/0/2/215/elan_microelectronics_corp_tmb.jpg)
Part Number:
Description:
Tone/pulse switchable dialer with LCD interface and dual-tone melody generator
Manufacturer:
ELAN Microelectronics Corp
Datasheet: