AT87C51RD2-RDTUM Atmel, AT87C51RD2-RDTUM Datasheet - Page 65
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AT87C51RD2-RDTUM
Manufacturer Part Number
AT87C51RD2-RDTUM
Description
IC 8051 MCU 32K OTP 40MHZ 64VQFP
Manufacturer
Atmel
Series
87Cr
Datasheet
1.TS87C51RB2-VIA.pdf
(86 pages)
Specifications of AT87C51RD2-RDTUM
Core Processor
8051
Core Size
8-Bit
Speed
40/20MHz
Connectivity
UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
48
Program Memory Size
64KB (64K x 8)
Program Memory Type
OTP
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
UART
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
32
Number Of Timers
3
Operating Supply Voltage
2.7 V to 5.5 V
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
11.5.3
Figure 11-6. External Program Memory Read Cycle
4188F–8051–01/08
External Program Memory Read Cycle
PORT 0
PORT 2
PSEN
ALE
INSTR IN
OR SFR-P2
ADDRESS
Table 11-7.
Symbol
T
T
T
T
T
T
T
T
T
T
T
PLPH
LHLL
AVLL
LLAX
PLAZ
LLPL
PXIX
PXIZ
AVIV
LLIV
PLIV
T
LHLL
T
T
AC Parameters for a Variable Clock: derating formula
LLAX
AVLL
A0-A7
Type
Max
Max
Max
Max
Max
Min
Min
Min
Min
Min
Min
T
AVIV
ADDRESS A8-A15
T
LLIV
T
LLPL
TPLAZ
T
Standard
PLIV
2 T - x
4 T - x
3 T - x
3 T - x
5 T - x
Clock
T - x
T - x
T - x
T - x
x
x
T
PLPH
INSTR IN
T
PXIX
X2 Clock
0.5 T - x
0.5 T - x
0.5 T - x
1.5 T - x
1.5 T - x
0.5 T - x
2.5 T - x
12 T
2 T - x
T - x
x
x
CLCL
T
PXIZ
T
-M
10
15
15
30
10
20
40
40
10
PXAV
0
7
A0-A7
ADDRESS A8-A15
13
13
22
15
25
30
10
AT/TS8xC51Rx2
-V
8
8
0
5
INSTR IN
15
20
20
35
15
25
45
15
45
10
-L
0
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
65