AT91SAM7SE256B-CU Atmel, AT91SAM7SE256B-CU Datasheet - Page 31
![IC ARM7 MCU FLASH 256K 144-LFBGA](/photos/12/13/121356/144-lfbga_sml.jpg)
AT91SAM7SE256B-CU
Manufacturer Part Number
AT91SAM7SE256B-CU
Description
IC ARM7 MCU FLASH 256K 144-LFBGA
Manufacturer
Atmel
Series
AT91SAMr
Datasheet
1.AT91SAM7SE256-AU.pdf
(673 pages)
Specifications of AT91SAM7SE256B-CU
Core Processor
ARM7
Core Size
16/32-Bit
Speed
55MHz
Connectivity
EBI/EMI, I²C, SPI, SSC, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
88
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Core
ARM7TDMI
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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- Download datasheet (11Mb)
9.3
6222F–ATARM–14-Jan-11
Power Management Controller
It provides SLCK, MAINCK and PLLCK.
Figure 9-2.
The Power Management Controller uses the Clock Generator outputs to provide:
The Master Clock (MCK) is programmable from a few hundred Hz to the maximum operating fre-
quency of the device.
The Processor Clock (PCK) switches off when entering processor idle mode, thus allowing
reduced power consumption while waiting for an interrupt.
• Main Oscillator frequency ranges between 3 and 20 MHz
• Main Oscillator can be bypassed
• PLL output ranges between 80 and 220 MHz
• the Processor Clock PCK
• the Master Clock MCK
• the USB Clock UDPCK
• all the peripheral clocks, independently controllable
• three programmable clock outputs
Clock Generator Block Diagram
PLLRC
XOUT
XIN
SAM7SE512/256/32 Preliminary
Clock Generator
Management
Embedded
Status
Controller
Oscillator
Oscillator
PLL and
Divider
Power
Main
RC
Control
Slow Clock
SLCK
Main Clock
MAINCK
PLL Clock
PLLCK
31
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