AT89C51RE2 Atmel Corporation, AT89C51RE2 Datasheet - Page 172

• Manufacturer Part Number: AT89C51RE2
• Manufacturer: Atmel Corporation

Specifications of AT89C51RE2

• Flash (kbytes): 128 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 34
• Spi: 1
• Uart: 2
• Sram (kbytes): 8.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART/OCD
• Watchdog: Yes

172
AT89C51RE2
Table 123. AC Parameters for a Fix Clock
Notes:
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
T
T
QVWH
WHQX
WLWH
QVWX
WHLH
RLRH
RHDX
RHDZ
AVDV
AVWL
RLDV
LLDV
LLWL
RLAZ
1. ‘ -L ‘ refers to 2V - 5.5V version.
2. ‘ -M ’ refers to 4.5V to 5.5V version.
Min
125
125
155
45
70
10
0
5
0
5
-M
(1)
Max
155
160
105
95
25
45
Min
125
125
155
45
70
10
0
5
0
5
-L
(2)
Max
155
160
105
95
25
45
7663E–8051–10/08
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns