mc68hc705j2 Freescale Semiconductor, Inc, mc68hc705j2 Datasheet - Page 64

• Manufacturer Part Number: mc68hc705j2
• Description: 8-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

MOTOROLA
8-2
The bootloader function begins when a rising edge occurs on the RESET pin
while the IRQ /V
grounded.
The PB2 pin selects the bootloader function, as the following table shows.
V
DD
330
330
PROGRAM
S1
15 pF
VERIFY
4 MHz
10 M
Table 8-1. Bootloader Function Selection
10 k
PP
1 F
V
S2
PP
pin is at V
P B 2
V
15 pF
DD
1
0
20
19
Figure 8-1. Bootloader Circuit
1
2
8
7
6
5
OSC1
OSC2
RESET
PB0
PB1
PB2
PB3
IRQ/V
BOOTLOADER MODE
MC68JC705
PP
Program and Verify
Verify
PP
, the PB1 pin is at logical one, and the PB0 pin is
PB4
PB5
V
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
V
SS
DD
18
17
16
15
14
13
12
11
9
4
3
10
Bootloader Function
V
V
DD
DD
10 k
10 k
MC68HC05J1 EMULATION M
MC68HC705J2 NATIVE MO
D0
D1
D2
D3
D4
D5
D6
D7
CE
OE
CONNECT 2 AND 3 FOR
CONNECT 1 AND 2 FOR
2764
1
A10
A12
A11
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
2
3
10 k
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q11
Q12
RST
MC14040
MC68HC705J2
CLK