AT89C5131A-M Atmel Corporation, AT89C5131A-M Datasheet - Page 14
AT89C5131A-M
Manufacturer Part Number
AT89C5131A-M
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT89C5130A-M.pdf
(188 pages)
2.AT89C5130A-M.pdf
(4 pages)
3.AT89C5130A-M.pdf
(34 pages)
Specifications of AT89C5131A-M
Flash (kbytes)
32 Kbytes
Max. Operating Frequency
48 MHz
Cpu
8051-12C
Max I/o Pins
34
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
1
Twi (i2c)
1
Uart
1
Sram (kbytes)
1.25
Eeprom (bytes)
1024
Self Program Memory
API
Operating Voltage (vcc)
2.7 to 5.5
Timers
4
Isp
UART/USB
Watchdog
Yes
- Current page: 14 of 188
- Download datasheet (2Mb)
5. Clock Controller
5.1
Figure 5-1.
5.2
14
Introduction
Oscillator
AT89C5130A/31A-M
X1
X2
Oscillator Block Diagram
PLLCON.2
EXT48
The AT89C5130A/31A-M clock controller is based on an on-chip oscillator feeding an on-chip
Phase Lock Loop (PLL). All the internal clocks to the peripherals and CPU core are generated
by this controller.
The AT89C5130A/31A-M X1 and X2 pins are the input and the output of a single-stage on-chip
inverter (see Figure 5-1) that can be configured with off-chip components as a Pierce oscillator
(see Figure 5-2). Value of capacitors and crystal characteristics are detailed in the section “DC
Characteristics”.
The X1 pin can also be used as input for an external 48 MHz clock.
The clock controller outputs three different clocks as shown in Figure 5-1:
These clocks are enabled or disabled depending on the power reduction mode as detailed in
Section “Power Management”, page 155.
Two types of clock sources can be used for CPU:
PCON.1
• a clock for the CPU core
• a clock for the peripherals which is used to generate the Timers, PCA, WD, and Port
• a clock for the USB controller
• Crystal oscillator on X1 and X2 pins: Up to 32 MHz (Amplifier Bandwidth)
• External clock on X1 pin: Up to 48MHz
PD
sampling clocks
PLL
0
1
÷
2
CKCON.0
X2
0
1
PCON.0
IDL
USB
Clock
Peripheral
Clock
CPU Core
Clock
4337K–USB–04/08
Related parts for AT89C5131A-M
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
8-bit microcontroller with 4K bytes flash, 5V, 20MHz
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit microcontroller with 4K bytes flash, 5V, 20MHz
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
357-036-542-201 CARDEDGE 36POS DL .156 BLK LOPRO
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-Bit Microcontroller with 4K Bytes Flash
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
Part Number:
Description:
8-bit Microcontroller with 4K Bytes Flash
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
Part Number:
Description:
8-bit Microcontroller With 4k Bytes Flash
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
IC 8051 MCU 64K FLASH 44-VQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC 8051 MCU FLASH 16K 24SOIC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC 8051 MCU FLASH 16K 32VQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC 8051 MCU FLASH 32K 64BGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC 8051 MCU FLASH 64K 52PLCC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC 8051 MCU FLASH 64K 64VQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC 8051 MCU 16K FLASH 32-VQFP
Manufacturer:
Atmel
Datasheet: