AT89S53-24JC Datasheet PDF - ATMEL Corporation
| Part Number | AT89S53-24JC | |
| Description | 8-Bit Microcontroller with 12K Bytes Flash | |
| Manufacturers | ATMEL Corporation | |
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Features
• Compatible with MCS-51™ Products
• 12K Bytes of In-System Reprogrammable Downloadable Flash Memory
– SPI Serial Interface for Program Downloading
– Endurance: 1,000 Write/Erase Cycles
• 4.0V to 6V Operating Range
• Fully Static Operation: 0 Hz to 24 MHz
• Three-Level Program Memory Lock
• 256 x 8-bit Internal RAM
• 32 Programmable I/O Lines
• Three 16-bit Timer/Counters
• Nine Interrupt Sources
• Programmable UART Serial Channel
• SPI Serial Interface
• Low Power Idle and Power Down Modes
• Interrupt Recovery From Power Down
• Programmable Watchdog Timer
• Dual Data Pointer
• Power Off Flag
Description
The AT89S53 is a low-power, high-performance CMOS 8-bit microcomputer with 12K
bytes of Downloadable Flash programmable and erasable read only memory. The
device is manufactured using Atmel’s high density nonvolatile memory technology
and is compatible with the industry standard 80C51 instruction set and pinout. The on-
chip Downloadable Flash allows the program memory to be reprogrammed in-system
through an SPI serial interface or by a conventional nonvolatile memory programmer.
By combining a versatile 8-bit CPU with Downloadable Flash on a monolithic chip, the
Atmel AT89S53 is a powerful microcomputer which provides a highly flexible and cost
effective solution to many embedded control applications.
The AT89S53 provides the following standard features: 12K bytes of Downloadable
Flash, 256 bytes of RAM, 32 I/O lines, programmable watchdog timer, two Data Point-
ers, three 16-bit timer/counters, a six-vector two-level interrupt architecture, a full
duplex serial port, on-chip oscillator, and clock circuitry. In addition, the AT89S53 is
designed with static logic for operation down to zero frequency and supports two soft-
ware selectable power saving modes. The Idle Mode stops the CPU while allowing
the RAM, timer/counters, serial port, and interrupt system to continue functioning. The
Power Down Mode saves the RAM contents but freezes the oscillator, disabling all
other chip functions until the next interrupt or hardware reset.
The Downloadable Flash can be changed a single byte at a time and is accessible
through the SPI serial interface. Holding RESET active forces the SPI bus into a serial
programming interface and allows the program memory to be written to or read from
unless Lock Bit 2 has been activated.
8-Bit
Microcontroller
with 12K Bytes
Flash
AT89S53
0787B-B–12/97
4-217
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AT89S53
XTAL1
Input to the inverting oscillator amplifier and input to the
internal clock operating circuit.
XTAL2
Output from the inverting oscillator amplifier.
Special Function Registers
A map of the on-chip memory area called the Special Func-
tion Register (SFR) space is shown in Table 1.
Note that not all of the addresses are occupied, and unoc-
cupied addresses may not be implemented on the chip.
Read accesses to these addresses will in general return
random data, and write accesses will have an indeterminate
effect.
Table 1. AT89S53 SFR Map and Reset Values
0F8H
0F0H
B
00000000
0E8H
0E0H
ACC
00000000
0D8H
0D0H
0C8H
PSW
00000000
T2CON
00000000
T2MOD
XXXXXX00
RCAP2L
00000000
RCAP2H
00000000
0C0H
0B8H
0B0H
0A8H
0A0H
98H
90H
88H
80H
IP
XX000000
P3
11111111
IE
0X000000
P2
11111111
SCON
00000000
P1
11111111
TCON
00000000
P0
11111111
SPSR
00XXXXXX
SBUF
XXXXXXXX
TMOD
00000000
SP
00000111
TL0
00000000
DP0L
00000000
TL1
00000000
DP0H
00000000
TL2
00000000
TH0
00000000
DP1L
00000000
SPCR
000001XX
TH2
00000000
TH1
00000000
DP1H
00000000
WCON
00000010
SPDR
XXXXXXXX
0FFH
0F7H
0EFH
0E7H
0DFH
0D7H
0CFH
0C7H
0BFH
0B7H
0AFH
0A7H
9FH
97H
8FH
PCON
0XXX0000
87H
4-221
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for AT89S53-24JC electronic component. |
| Information | Total 32 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ AT89S53-24JC.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| AT89S53-24JC | The function is 8-Bit Microcontroller with 12K Bytes Flash. ATMEL Corporation | |
| AT89S53-24JI | The function is 8-Bit Microcontroller with 12K Bytes Flash. ATMEL Corporation | |
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