參數(shù)資料
型號: MC80F0216K
廠商: Electronic Theatre Controls, Inc.
元件分類: 8位微控制器
英文描述: 8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 8位單晶片微控制器
文件頁數(shù): 117/128頁
文件大?。?/td> 1408K
代理商: MC80F0216K
Preliminary
MC80F0208/16/24
MAR. 2005 Ver 0.2
113
27.3 Hardware Conditions to Enter the ISP Mode
The In-System Programming (ISP) is performed without remov-
ing the microcontroller from the target system. The In-System
Programming(ISP) facility consists of a series of internal hard-
ware resources coupled with internal firmware through the serial
port. The In-System Programming (ISP) facility has made in-cir-
cuit programming in an embedded application possible with a
minimum of additional expense in components and circuit board
area. The boot loader can be executed by holding ALEB high,
RST/V
PP
as +9V, and ACLK0 with the OSC. 1.8432MHz. The
ISP function uses five pins: TxD0, RxD0, ALEB, ACLK0 and
RST/V
PP
.
Figure 27-1 ISP Configuration
Note:
Considerations to implement ISP function in a user
target board
The ACLK0 must be connected to the specifed
oscillator.
Connect the +9V to RST/Vpp pin directly.
The ALEB pin must be pulled high.
The main clk must be higher than 2MHz.
V
DD
REX
IN
X
OUT
V
SS
R47 / TxD0
R46 / RxD0
R45 / ACLK0
R30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
M
ISP Configuration
Tx_Data
Rx_Data
1.8432MHz
V
DD
V
DD
(+5V)
+9V
ALEB
RST/V
PP
X-TAL
2MHz~12MHz
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