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SH79F6488P/080PR Datasheet(PDF) 129 Page - SINOWEALTH Electronic Ltd

Part # SH79F6488P/080PR
Description  Enhanced 8051 Microcontroller with 20bit Σ-ΔADC and LCD Driver
PDF  152 Pages
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Manufacturer  SINOWEALTH [SINOWEALTH Electronic Ltd]
Direct Link  https://en.sinowealth.com
Logo SINOWEALTH - SINOWEALTH Electronic Ltd

SH79F6488P/080PR Datasheet(HTML) 129 Page - SINOWEALTH Electronic Ltd

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SH79F6488/SH79F6489
129
8.13 Warm-up Timer
8.13.1 Features
 Built-in power on warm-up counter to eliminate unstable state of power on
 Built-in oscillator warm-up counter to eliminate unstable state when oscillation startup
SH79F6488/SH79F6489 has a built-in power warm-up counter; it is designed to eliminate unstable state after power on or to do
some internal initial operation such as read customer option etc.
SH79F6488/SH79F6489 has also a built-in oscillator warm-up counter, it is designed to eliminate unstable state when oscillator
starts oscillating in the following conditions: Power-on reset, Pin reset, LVR reset, Watchdog Reset and Wake up from
Power-down mode.
After power-on, SH79F6488/SH79F6489 will start power warm-up procedure first, and then oscillator warm-up procedure.
Power Warm-up Time
Power On Reset/
Pin Reset/
Low Voltage Reset
WDT Reset
(Not in Power-Down Mode)
WDT Reset
(Wakeup from Power-Down
Mode)
Wakeup from Power-Down
Mode
(Only for interrupt)
TPWRT**
OSC
Warm up*
TPWRT**
OSC
Warm up*
TPWRT**
OSC
Warm up*
TPWRT**
OSC
Warm up*
11ms
YES
500us
NO
500us
YES
32us
YES
OSC Warm-up Time
Option:
OP_WMT
Oscillator Type
00
01
10
11
Ceramic/Crystal
2
17 X Tosc
2
14 X Tosc
2
11 X Tosc
2
8 X Tosc
32kHz Crystal
2
13 X Tosc
Internal RC
2
7 X Tosc



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