MC68HC705P9 Datasheet, PDF (40/160 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Memory
Freescale Semiconductor, Inc.
MC68HC705P9
V_PP ² _IRQ/VPP
2 MHz
27
OSC1
PA0 ¹⁰
PA1 ⁹
26 _OSC2
PA2 ⁸
PA3 ⁷
10 MΩ
PA4 ⁶
PA5 ⁵
PA6 ⁴
PA7 ³
V_DD
10 kΩ
1
RESET
S1
1 µF
11
PB5
25
PD7
V_DD
17
PC5/AN1
16 _PC6/AN0
330 Ω
330 Ω
PROGRAM
13
VERIFY
12
PB7/SCK
PB6/SDI
21
PC1
PC2 ²⁰
PC4 ¹⁸
19
PC3
2764
D0
A0
D1
A1
D2
A2
D3
A3
D4
A4
D5
A5
D6
A6
D7
A7
CE
A8
OE
A9
A10
A12
A11
V_DD
10 kΩ
V_DD
10 kΩ
10 kΩ
S2
S3
Figure 3-4. Bootloader Circuit
MC14040B
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q11
Q12
RST
CLK
The logical states of the PC4/AN2 and PC3/AN3 pins select the
bootloader function, as Table 3-1 shows.
Table 3-1. Bootloader Function Selection
PC4/AN2
1
1
PC3/AN3
1
0
Function
Program and verify
Verify only
Technical Data
40
Memory
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MC68HC705P9 — Rev. 4.0
MOTOROLA