TS83C51RB2-VCJD View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

TS83C51RB2-VCJD

High Performance 8-bit Microcontrollers

Atmel Corporation 

TS80C51RA2/RD2

TS83C51RB2/RC2/RD2

TS87C51RB2/RC2/RD2

PROGRAM

SIGNALS*

CONTROL

SIGNALS*

EA/VPP

ALE/PROG

RST

PSEN

P2.6

P2.7

P3.3

P3.6

P3.7

+5V

VCC

P0.0-P0.7

D0-D7

P1.0-P1.7

P2.0-P2.5

P3.4-P3.5

A0-A7

A8-A15

4 to 6 MHz

XTAL1

VSS

GND

* See Table 31. for proper value on these inputs

Figure 18. Set-Up Modes Configuration

8.3.3. Programming Algorithm

The Improved Quick Pulse algorithm is based on the Quick Pulse algorithm and decreases the number of pulses

applied during byte programming from 25 to 1.

To program the TS87C51RB2/RC2/RD2 the following sequence must be exercised:

• Step 1: Activate the combination of control signals.

• Step 2: Input the valid address on the address lines.

• Step 3: Input the appropriate data on the data lines.

• Step 4: Raise EA/VPP from VCC to VPP (typical 12.75V).

• Step 5: Pulse ALE/PROG once.

• Step 6: Lower EA/VPP from VPP to VCC

Repeat step 2 through 6 changing the address and data for the entire array or until the end of the object file is

reached (See Figure 19.).

8.3.4. Verify algorithm

Code array verify must be done after each byte or block of bytes is programmed. In either case, a complete verify

of the programmed array will ensure reliable programming of the TS87C51RB2/RC2/RD2.

P 2.7 is used to enable data output.

To verify the TS87C51RB2/RC2/RD2 code the following sequence must be exercised:

• Step 1: Activate the combination of program and control signals.

• Step 2: Input the valid address on the address lines.

• Step 3: Read data on the data lines.

Repeat step 2 through 3 changing the address for the entire array verification (See Figure 19.)

The encryption array cannot be directly verified. Verification of the encryption array is done by observing that the

code array is well encrypted.

54

Rev. C - 06 March, 2001

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