AT89S52-24JI Atmel, AT89S52-24JI Datasheet - Page 28

• Manufacturer Part Number: AT89S52-24JI
• Description: IC MCU 8K FLASH 24MHZ 44-PLCC
• Manufacturer: Atmel
• Series: 89Sr

Specifications of AT89S52-24JI

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 24MHz
• Connectivity: UART/USART
• Peripherals: WDT
• Number Of I /o: 32
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

25. Serial Programming Characteristics
Figure 25-1. Serial Programming Timing
Table 25-1.
28
Symbol
1/t
t
t
t
t
t
t
t
t
CLCL
SHSL
SLSH
OVSH
SHOX
SLIV
ERASE
SWC
CLCL
AT89S52
Serial Programming Characteristics, T
Parameter
Oscillator Frequency
Oscillator Period
SCK Pulse Width High
SCK Pulse Width Low
MOSI Setup to SCK High
MOSI Hold after SCK High
SCK Low to MISO Valid
Chip Erase Instruction Cycle Time
Serial Byte Write Cycle Time
MOSI
MISO
SCK
t
OVSH
A
t
= -40⋅ C to 85⋅ C, V
SHSL
8 t
2 t
8 t
t
Min
CLCL
t
30
10
CLCL
CLCL
CLCL
3
SHOX
CC
= 4.0 - 5.5V (Unless Otherwise Noted)
t
SLSH
Typ
16
t
SLIV
64 t
CLCL
Max
500
33
32
+ 400
1919D–MICRO–6/08
Units
MHz
ms
ns
ns
ns
ns
ns
ns
µs