AT89S53-24PC Atmel, AT89S53-24PC Datasheet - Page 29

• Manufacturer Part Number: AT89S53-24PC
• Description: IC MICRO CTRL 24MHZ 40DIP
• Manufacturer: Atmel
• Series: 89Sr

Specifications of AT89S53-24PC

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 24MHz
• Connectivity: SPI, UART/USART
• Peripherals: WDT
• Number Of I /o: 32
• Program Memory Size: 12KB (12K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 6 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SPI, UART
• Maximum Clock Frequency: 24 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 4 V to 6 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: No

.
Serial Port Timing: Shift Register Mode Test Conditions
The values in this table are valid for V
Shift Register Mode Timing Waveforms
AC Testing Input/Output Waveforms
Notes:
0787E–MICRO–3/06
Symbol
t
t
t
t
t
XLXL
QVXH
XHQX
XHDX
XHDV
1. AC Inputs during testing are driven at V
for a logic 1 and 0.45V for a logic 0. Timing measure-
ments are made at V
for a logic 0.
Parameter
Serial Port Clock Cycle Time
Output Data Setup to Clock Rising
Edge
Output Data Hold after Clock Rising
Edge
Input Data Hold after Clock Rising
Edge
Clock Rising Edge to Input Data
Valid
IH
min. for a logic 1 and V
CC
= 4.0V to 6V and Load Capacitance = 80 pF
CC
- 0.5V
IL
700
Min
1.0
50
(1)
max.
0
12 MHz Oscillator
Float Waveforms
Notes:
Max
700
1. For timing purposes, a port pin is no longer floating
when a 100 mV change from load voltage occurs. A
port pin begins to float when a 100 mV change from
the loaded V
10t
2t
CLCL
12t
CLCL
OH
Min
Variable Oscillator
0
CLCL
/V
- 117
(1)
- 133
OL
level occurs.
10t
CLCL
Max
AT89S53
- 133
Units
µs
ns
ns
ns
ns
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