gc80c520a CORERIVER Semiconductor, gc80c520a Datasheet - Page 75

• Manufacturer Part Number: gc80c520a
• Description: Midas1.0 Family Mask Rom/eprom/romless 8-bit Turbo Microcontrollers
• Manufacturer: CORERIVER Semiconductor

Encryption Array
Lock Bits
Verify code data
Program
Read Signature
Program code
Program
Mode
data
MiDAS1.0 Family
Bit1
Bit2
Bit3
A[07:00]
RESET
Control Signal
Control Signal
Control Signal
H
H
H
H
H
H
H
XTAL1
Figure 6-40 Pin Configuration for EPROM programming
“1”
PSEN
Table 6-15 Conditions to control EPROM in ROM Writer
L
L
L
L
L
L
L
ROM Writer Interface
A00
A01
A02
A03
A04
A05
A06
A07
ALE
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
H
H
PWM1
ADC1
ADC2
ADC3
INT2 / P1.4
INT3 / P1.5
INT4 / P1.6
INT5 / P1.7
RESET
RXD / P3.0
TXD / P3.1
INT0 / P3.2
INT1 / P3.3
PWM0
T1 / P3.5
WR / P3.6
RD / P3.7
XTAL2
XTAL1
VSS
11.5V
11.5V
11.5V
11.5V
11.5V
VPP
/ T2EX / P1.1
/ P1.2
/ P1.3
5V
5V
/ T2 / P1.0
/ T0 / P3.4
P2.6
Page 75 of 187
H
H
H
L
L
L
L
P2.7
H
H
H
H
L
L
L
P0.0 / AD0 /
P3.3
H
H
H
H
H
L
L
ALE / PROG
P0.1 / AD1
P0.2 / AD2
P0.3 / AD3
P0.4 / AD4
P0.5 / AD5
P0.6 / AD6
P0.7 / AD7
P2.7 / A15
P2.6 / A14
P2.5 / A13
P2.4 / A12
P2.3 / A11
P2.2 / A10
EA /
P2.1 / A9
P2.0 / A8
P3.6
H
H
H
H
ADC0
L
L
L
PSEN
VPP
VDD
P3.7
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
H
H
H
H
L
L
L
+5V
DATA0
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
A12
A11
A10
A09
A08
V
Code=(main byte) XNOR (Enc. Byte)
V
Lock1=1: MOVC instruction disable.
Further programming disable.
Lock2=1: same as Lock1. And verify
disable.
Lock3=1: same as bit1, bit2. External
code execution disable.
30h=C0h (CORERIVER)
31h=87h(Product)
60h=52h(EPROM size)
PP
PP
=11.5V and ALE low pulse
=11.5V and ALE low pulse
VPP
ALE
“0”
Control Signal
Control Signal
Functional Description
DATA[7:0]
A[12:08]