AT89S8253 Atmel Corporation, AT89S8253 Datasheet - Page 44

• Manufacturer Part Number: AT89S8253
• Manufacturer: Atmel Corporation

Specifications of AT89S8253

• Flash (kbytes): 12 Kbytes
• Max. Operating Frequency: 24 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Sram (kbytes): 0.25
• Eeprom (bytes): 2048
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 3
• Isp: SPI
• Watchdog: Yes

26. Flash Programming and Verification Characteristics – Parallel Mode
T
Notes:
44
A
Symbol
V
I
1/t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
PP
PWRUP
RHX
OSTL
HSTL
MSTP
ASTP
DSTP
PGW
AHLD
DHLD
BLT
PHBL
WC
MHLD
VFY
PSTP
PHLD
PLX
XRL
PWRDN
PP
= 20°C to 30°C, V
CLCL
1. Power On occurs once V
2. 9 ms if Chip Erase.
AT89S8253
Parameter
Programming Enable Voltage
Programming Enable Current
Oscillator Frequency
Power On to RST High
RST High to XTAL Start
Oscillator Settling Time
High Voltage Settling Time
Mode Setup to PROG Low
Address Setup to PROG Low
Data Setup to PROG Low
PROG Width
Address Hold after PROG
Data Hold after PROG
Byte Load Period
PROG High to BUSY Low
Write Cycle Time
Mode Hold After BUSY Low
Address to Data Verify Valid
PROG Setup to V
PROG Hold after V
PROG Low to XTAL Halt
XTAL Halt to RST Low
RST Low to Power Off
CC
= 4.0V to 5.5V
CC
(2)
PP
PP
reaches 2.4V.
High
Low
(1)
11.5
Min
10
10
10
10
10
10
10
3
1
1
1
1
1
1
1
1
1
1
12.5
Max
150
256
1.0
4.5
24
1
3286P–MICRO–3/10
Units
MHz
mA
ms
ms
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
V