AT89S4051 Atmel Corporation, AT89S4051 Datasheet - Page 31

• Manufacturer Part Number: AT89S4051
• Manufacturer: Atmel Corporation

Specifications of AT89S4051

• Flash (kbytes): 4 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

3390E–MICRO–6/08
Table 32-1.
Symbol
V
I
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
PP
PWRUP
POR
PSTP
HSTL
MSTP
MHLD
XTW
ASTP
AHLD
PGW
DSTP
DHLD
XLP
PHX
BLT
PHBL
WC
RDT
VFY
PWRDN
PP
Parameter
Programming Enable Voltage
Programming Enable Current
Power-on to RST High
Power-on Reset Time
PROG Setup to V
High Voltage Setting time
Mode Setup to PROG or XTAL1
Mode Hold after PROG or XTAL2
XTAL1 High Width
Address Setup to XTAL1 High
Address Hold after XTAL1 Low
PROG Low Width
Data Setup to PROG Low
Data Hold after PROG High
XTAL1 Low to PROG Low
PROG High to XTAL1 High
Byte Load Period
PROG High to BUSY Low
Wire Cycle Time
Read Byte Time
XTAL1 Low to Data Verify Valid
RST Low to Power Off
Parallel Flash Programming and Verification Parameters
PP
High
11.5
Min
0.5
0.5
0.5
0.5
0.5
0.5
0.5
10
10
10
2
1
1
1
1
1
AT89S2051/S4051
12.5
0.25
Max
150
256
1.0
4.5
Units
mA
ms
ms
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
V
31