MC68HC705MC4 Datasheet, PDF (20/99 Pages) Motorola, Inc – Microcontrollers

MC68HC705MC4 Specification Rev. 1.5
VPP
VDD
10
2764
1 27 28
MC14040B
8
6.0 MHz
7
VDD
47KΩ
9
0.1UF
6
IRQ/V_PP
OSC1
OSC2
RESET
V_SS
PA0 ²⁵
PA1 ²⁶
PA2 ²⁷
PA3 ²⁸
PA4 ¹
PA5
PA6
2
3
PA7 ⁵
11 _D0
12 _D1
13 _D2
15 _D3
16 _D4
17 _D5
18 _D6
19 _D7
20 _CE
22 _OE
A0
A1
A2
10
9
8
7
A3 ₆
A4 ₅
A5 ₄
A6 ₃
A7 ₂₅
A8 ₂₄
A9
A10
A11
21
23
VDD ² _A12
9
VDD
7 ^Q1
6 ^Q2
16
5 ^Q3
3
2
4
13
Q4
Q5
Q6
Q7
Q8
12
14
Q9
Q10
15
1
Q11
Q12
8
RST CLK
VDD
12 _PC1
V_DD ⁴
14
11
10
PROG
390Ω
VERF
390Ω
18 _PC7
17
PC6
11 PC0
(SYNC)
PC5 ¹⁶
PC4 ¹⁵
PC3 ¹⁴
PC2 ¹³
VDD VDD
All Resistors are 10 KΩ unless specified otherwise
0.1UF + 10UF to decouple V_DD/V_SS
Figure 2-4: Programming Circuit
2.2.2 EPROM PROGRAMMING REGISTER
This register is used to program the EPROM array. To program a byte of EPROM, set
LATCH, then write data to the desired address, then set EPGM for t_EPGM.
ADDR
REGISTER
READ
WRITE ⁷
6
5
4
3
2
1
0
$0026
PROGRAMMING REGISTER
BOOTSTRAP MODE
R
W
0
0
0
0
0
0
LATCH _EPGM
UNIMPLEMENTED
Figure 2-5: EPROM Programming Register
Section 2: Operating Modes
MOTOROLA
Page 11