AT89C51RD2 Atmel Corporation, AT89C51RD2 Datasheet - Page 116

• Manufacturer Part Number: AT89C51RD2
• Manufacturer: Atmel Corporation

Specifications of AT89C51RD2

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Sram (kbytes): 2
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

116
7. The maximum dV/dt value specifies the maximum Vcc drop to issure no internal POR/PFD reset.
AT89C51RD2/ED2
Port 0: 26 mA
Ports 1, 2 and 3: 15 mA
Maximum total I
If I
than the listed test conditions.
OL
exceeds the test condition, V
OL
Figure 25-1. I
Figure 25-2. I
Figure 25-3. I
for all output pins: 71 mA
CLOCK
SIGNAL
(NC)
CC
CC
CC
OL
CLOCK
SIGNAL
may exceed the related specification. Pins are not guaranteed to sink current greater
(NC)
Test Condition, Active Mode
Test Condition, Idle Mode
Test Condition, Power-down Mode
(NC)
V
RST
XTAL2
XTAL1
V
CC
SS
RST
XTAL2
XTAL1
V
V
SS
V
RST
XTAL2
XTAL1
EA
CC
I
P0
SS
CC
V
V
EA
CC
CC
V
I
P0
EA
V
CC
CC
P0
I
CC
CC
V
V
CC
CC
V
V
CC
CC
All other pins are disconnected.
All other pins are disconnected.
All other pins are disconnected.
4235K–8051–05/08