TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 245
TX4939XBG-400
Manufacturer Part Number
TX4939XBG-400
Description
Manufacturer
Toshiba
Datasheet
1.TX4939XBG-400.pdf
(740 pages)
Specifications of TX4939XBG-400
Cpu Core
TX49/H4 90nm
Clock Mhz/max Mips
400/520
Inst./data Cache
32KB (4 Way)/32KB (4 Way)
Tlb
x
1cycle Mac
x
Volts (v)
1.25/2.5/3.3
Peripherals
DDR, NAND, ATA, ETHERNET, SECURITY, FPU, MMU, SPI, I2S, I2C, PCI, VIDEO, UART, TIMER, RTC
Companion Chip
TC86C001FG
Package
PGBA456
Available stocks
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Manufacturer
Quantity
Price
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TX4939XBG-400
Manufacturer:
NSC
Quantity:
872
Company:
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TX4939XBG-400
Manufacturer:
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Part Number:
TX4939XBG-400
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TOSHIBA/东芝
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20 000
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RTC
11.1.
Diagram below shows the overall structure of the TX4939 Real Time Clock.
Rev. 3.1 November 1, 2005
Feature of Real Time Clock Module (RTC)
32,768Hz
3.0V Bat.
COUT
X’tal
CIN
C1
C2
D1
ALARM*
RTCVDD
X32OUT
D2
X32IN
3.3V digital Power
VDDR(1.0V~1.5V)
Figure 11-1 RTC Block Diagram
Regulator
Voltage
32K OSC
Ground (common)
11-1
Chapter 11. Real Time Clock
alarm
VDDR
X32K
RTC Independent Voltage Region
47 bit (6 Bytes) temporary buffer
32 bits (4Bytes) Alarm Register
RTC 47 bit binary counter
Alarm Detector Circuit
250 Bytes CMOS RAM
8-bit
Asynchronous R/W access
Toshiba RISC Processor
8-bit
TX4939
11
11
11
11
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