AT89S2051 Atmel Corporation, AT89S2051 Datasheet - Page 6

• Manufacturer Part Number: AT89S2051
• Manufacturer: Atmel Corporation

Specifications of AT89S2051

• Flash (kbytes): 2 Kbytes
• Max. Operating Frequency: 24 MHz
• Cpu: 8051-12C
• Max I/o Pins: 15
• Uart: 1
• Sram (kbytes): 0.25
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 2
• Isp: SPI

Table 7-1.
6
0D8H
0D0H
0C8H
0C0H
0E8H
0E0H
0B8H
0B0H
0A8H
0A0H
0F8H
0F0H
98H
90H
88H
80H
X0X00000
AT89S2051/S4051
00X00000
00000000
00000000
00000000
11111111
00000000
11111111
00000000
SCON
TCON
PSW
ACC
P3
P1
IP
IE
B
AT89S2051/S4051 SFR Map and Reset Values
XXXXXXXX
00000000
00000000
00000000
00000111
SADEN
SADDR
TMOD
SBUF
SP
00000000
00000000
DPL
TL0
00000000
00000000
DPH
TL1
00000000
TH0
00000000
TH1
XXXXXX0X
XXX00000
X0X00000
000X0000
CLKREG
PCON
ACSR
IPH
3390E–MICRO–6/08
0FFH
0F7H
0EFH
0E7H
0DFH
0D7H
0CFH
0C7H
0BFH
0B7H
0AFH
0A7H
9FH
97H
8FH
87H