STC micro STC8A8K64D4 Series - ISP Download and Typical Application Circuit; STC8 A8 K64 D4 Series ISP Download Application Circuit; Download Using RS-232 Converter (High Precision ADC), Emulation Supported

STC8A8K64D4 Series Manual
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5 ISP Download and typical application circuit
5.1 STC8A8K64D4 series ISP download application circuit
5.1.1 Download using RS-232 converter (High precision ADC), Emulation
supported
47u C?
P0.3
P0.4
P0.5
P0.6
P0.7
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
AGnd
AVref
AVcc
P5.4
Vcc
P5.5
Gnd
P0.2
P0.1
P0.0
P2.7
P2.6
P2.5
P2.4
P2.3
P2.2
P2.1
P2.0
P4.1
P3.7
P3.6
P3.5
P3.4
P3.3
P3.2
P3.1
P3.0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
System power
(Can be powered from USB)
C1+
V+
C1-
C2+
C2-
V-
T2OUT
R2IN
VCC
GND
T1OUT
R1IN
R1OUT
T1IN
T2IN
R2OUT
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
0.1u
0.1u
0.1u
0.1u
Vcc
10u
Vcc
1
6
2
7
3
8
4
9
5
STC8A8K64D4
22u
0.1u
220uH
AVcc
CD431/TL431
(2.5V Reference source)
511R
SP3232/
SP232/
MAX3232/
MAX232
0.1u
When MAX232 and target chip are
powered on at the same time, resistors and
diodes can be omitted
1N5819
100R
Vin
Power On Vcc
0R 0R
Analog
GND
System
GND
Digital
GND
CD431 (package SOT23)
47u Tantalum capacitor (package 3528)
22u Monolithic capacitor (package 0603)
10u Monolithic capacitor (package 0603)
0.1u Monolithic capacitor (package 0603)
C?
System clock<=10MHz System clock>10MHz
104(0.1uF) 103(0.01uF)
ISP download steps:
1. Power off the target chip.
2. Click the "Download/Program" button in the STC-ISP download software.
3. Power on the target chip.
4. Start ISP download.