AT87C52X2-3CSUV Atmel, AT87C52X2-3CSUV Datasheet - Page 33

• Manufacturer Part Number: AT87C52X2-3CSUV
• Description: Microcontrollers (MCU) Microcontroller
• Manufacturer: Atmel

Specifications of AT87C52X2-3CSUV

• Data Bus Width: 8 bit
• Program Memory Type: EPROM
• Program Memory Size: 8 KB
• Data Ram Size: 256 B
• Interface Type: UART
• Maximum Clock Frequency: 30 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3 bit
• Operating Supply Voltage: 5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: Through Hole
• Package / Case: PDIL-40
• Minimum Operating Temperature: 0 C
• Lead Free Status / Rohs Status: No

Definition of terms
Figure 11. Set-Up Modes Configuration
4184I–8051–02/08
* See Table 31. for proper value on these inputs
PROGRAM SIGNALS*
CONTROL SIGNALS*
4 to 6 MHz
Control and program signals must be held at the levels indicated in Table 35.
Address Lines: P1.0-P1.7, P2.0-P2.4 respectively for A0-A12
Data Lines: P0.0-P0.7 for D0-D7
Control Signals: RST, PSEN, P2.6, P2.7, P3.3, P3.6, P3.7.
Program Signals: ALE/PROG, EA/VPP.
Table 20. EPROM Set-up Modes
Mode
Program Code data
Verify Code data
Program Encryption
Array Address 0-3Fh
Read Signature Bytes
Program Lock bit 1
Program Lock bit 2
Program Lock bit 3
EA/VPP
ALE/PROG
RST
PSEN
P2.6
P2.7
P3.3
P3.6
P3.7
XTAL1
RST
1
1
1
1
1
1
1
PSEN
0
0
0
0
0
0
0
P0.0-P0.7
P1.0-P1.7
P2.0-P2.4
VCC
VSS
PROG
ALE/
1
1
GND
+5V
12.75V
12.75V
12.75V
12.75V
12.75V
VPP
EA/
1
1
D0-D7
A0-A7
A8-A12
P2.6
0
0
0
0
1
1
1
P2.7
1
1
1
1
0
P3.3
1
0
1
0
1
1
1
P3.6
1
1
0
0
1
0
1
P3.7
1
1
1
0
1
0
0
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