參數(shù)資料
型號: MC68HC05P8EVS
廠商: Motorola, Inc.
英文描述: HCMOS MICROCONTROLLER UNIT
中文描述: HCMOS微控制器
文件頁數(shù): 48/82頁
文件大?。?/td> 327K
代理商: MC68HC05P8EVS
MOTOROLA
8-2
BOOTLOADER MODE
MC68HC705J2
Rev. 2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Figure 8-1. Bootloader Circuit
The bootloader function begins when a rising edge occurs on theRESET pin while
the IRQ/V
PP
pin is at V
PP
, the PB1 pin is at logical one, and the PB0 pin is
grounded.
The PB2 pin selects the bootloader function, as the following table shows.
Table 8-1. Bootloader Function Selection
PB2
1
0
Bootloader Function
Program and Verify
Verify
10
3
4
9
18
17
16
15
14
13
12
11
OSC1
OSC2
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
RESET
1 μF
4 MHz
10 M
15 pF
15 pF
VPP
10 k
VDD
PB0
PB1
PB2
PB3
330
330
PROGRAM
VERIFY
PB5
PB4
10 k
2764
MC14040B
A12
D0
D1
D2
D3
D4
D5
D6
D7
CE
OE
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q11
Q12
RST
CLK
IRQ/VPP
10 k
10 k
VSS
1
2
3
CONNECT 2 AND 3 FOR
MC68HC705J2 NATIVE MODE.
CONNECT 1 AND 2 FOR
MC68HC05J1 EMULATION MODE.
5
6
7
8
20
2
1
19
S2
S1
MC68JC705J2
VDD
VDD
VDD
VDD
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