MC68HC05L28 Datasheet, PDF (137/156 Pages) Motorola, Inc – Flexible general-purpose microcomputer

Note: The EPROM must be erased before performing a program cycle.
L1 = VERIFY
L2 = PROGRAM
+5V +5V
L1
L2
+5V
+5V
S1 S2 Function
1 0 ^{Program/verify}
0 0 Verify only
PB7
clock
+5V
PB5
clear
+5V
VDD
TCAP1
TCAP2
VREFH
S3
RESET
+5V +5V
S2
PB2
+5V
VCC
VPP
PGM
RST CLK
PB3
VREFL
ADIN
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
VPP
IRQ0 /VPP
VSS
S1
A0
A1
D0
A2
D1
A3
D2
A4
D3
A5
D4
A6
D5
A7
D6
A8
D7
A9
A10
A11
A12
OE
A13
VSS ^CE
Q0
Q1
Q2
VDD
Q3
Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q11
Q12
Q13
MC74HC393
10 MΩ
VSS
4 MHz
22pF
22pF
Figure A-1 MC68HC705L28 EPROM programming circuit
MC68HC05L28
MC68HC705L28
TPG
MOTOROLA
A-3
15