AT89S52-24AC View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT89S52-24AC

8-bit Microcontroller with 8K Bytes In-System Programmable Flash

Atmel Corporation 

25. Serial Programming Characteristics

Figure 25-1. Serial Programming Timing

MOSI

tOVSH

SCK

MISO

tSHSL

tSHOX

tSLSH

tSLIV

Table 25-1.

Symbol

1/tCLCL

tCLCL

tSHSL

tSLSH

tOVSH

tSHOX

tSLIV

tERASE

tSWC

Serial Programming Characteristics, TA = -40°C to 85°C, VCC = 4.0 - 5.5V (Unless Otherwise Noted)

Parameter

Min

Typ

Max

Units

Oscillator Frequency

3

33

MHz

Oscillator Period

30

ns

SCK Pulse Width High

SCK Pulse Width Low

MOSI Setup to SCK High

MOSI Hold after SCK High

SCK Low to MISO Valid

8 tCLCL

ns

8 tCLCL

ns

tCLCL

ns

2 tCLCL

ns

10

16

32

ns

Chip Erase Instruction Cycle Time

500

ms

Serial Byte Write Cycle Time

64 tCLCL + 400

µs

28 AT89S52

1919C–MICRO–3/05

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