AT89C55-24PI Atmel, AT89C55-24PI Datasheet - Page 16

• Manufacturer Part Number: AT89C55-24PI
• Description: Microcontrollers (MCU) 80C31 w/20k
• Manufacturer: Atmel

Specifications of AT89C55-24PI

• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 20 KB
• Data Ram Size: 256 B
• Interface Type: UART
• Maximum Clock Frequency: 24 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3 x 16 bit
• Operating Supply Voltage: 4 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Package / Case: PDIP-40
• Minimum Operating Temperature: - 40 C
• Lead Free Status / Rohs Status: No

Flash Programming and Verification Characteristics
T
Note:
4-184
A
Symbol
V
I
1/t
t
t
t
t
t
t
t
t
t
t
t
t
t
PP
AVGL
GHAX
DVGL
GHDX
EHSH
SHGL
GHSL
GLGH
AVQV
ELQV
EHQZ
GHBL
WC
PP
= 0°C to 70°C, V
CLCL
(1)
(1)
(1)
1. Only used in 12-volt programming mode.
Parameter
Programming Enable Voltage
Programming Enable Current
Oscillator Frequency
Address Setup to PROG Low
Address Hold After PROG
Data Setup to PROG Low
Data Hold After PROG
P2.7 (ENABLE) High to V
V
V
PROG Width
Address to Data Valid
ENABLE Low to Data Valid
Data Float After ENABLE
PROG High to BUSY Low
Byte Write Cycle Time
PP
PP
CC
Setup to PROG Low
Hold After PROG
= 5.0V
AT89C55
10%
PP
48t
48t
48t
48t
48t
11.5
Min
10
10
CLCL
CLCL
CLCL
CLCL
CLCL
3
1
0
48t
48t
48t
Max
12.5
110
1.0
1.0
2.0
33
CLCL
CLCL
CLCL
Units
MHz
mA
ms
V
s
s
s
s