AT87C51RC2-3CSUM Atmel, AT87C51RC2-3CSUM Datasheet - Page 64

• Manufacturer Part Number: AT87C51RC2-3CSUM
• Description: IC 8051 MCU 32K OTP 40MHZ 40DIP
• Manufacturer: Atmel
• Series: 87Cr

Specifications of AT87C51RC2-3CSUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40/20MHz
• Connectivity: UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

11.5.2
64
AT/TS8xC51Rx2
External Program Memory Characteristics
Table 11-5.
Table 11-6.
Symbol
Symbol
Speed
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
PLPH
PXAV
PLAZ
PLPH
PLAZ
LHLL
AVLL
LLAX
LLPL
PXIX
AVIV
LHLL
AVLL
LLAX
LLPL
PXIX
AVIV
LLIV
PLIV
PXIZ
LLIV
PLIV
PXIZ
T
T
Symbol Description
AC Parameters for Fix Clock
Parameter
Oscillator clock period
ALE pulse width
Address Valid to ALE
Address Hold After ALE
ALE to Valid Instruction In
ALE to PSEN
PSEN Pulse Width
PSEN to Valid Instruction In
Input Instruction Hold After PSEN
Input Instruction FloatAfter PSEN
PSEN to Address Valid
Address to Valid Instruction In
PSEN Low to Address Float
Min
25
40
10
10
15
55
0
40 MHz
-M
Max
70
35
18
85
10
60 MHz equiv.
Min
33
25
35
4
4
9
0
X2 mode
30 MHz
-V
Max
45
25
12
53
10
Min
25
42
12
12
17
60
0
standard
40 MHz
mode
-V
Max
78
50
20
95
10
40 MHz equiv.
Min
50
35
10
50
5
5
0
X2 mode
20 MHz
-L
Max
65
30
10
80
10
Min
33
52
13
13
18
75
0
standard
30 MHz
mode
-L
Max
122
98
55
18
10
4188F–8051–01/08
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns