TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 55
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
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4. Precautions and Usage Considerations
4.1
4.1.1
This section describes matters specific to each product group which need to be taken into consideration when
using devices. If the same item is described in Sections 3 and 4, the description in Section 4 takes precedence.
(1) Using resonators which are not specifically recommended for use
Resonators recommended for use with Toshiba products in microcontroller oscillator applications are listed in
Toshiba databooks along with information about oscillation conditions. If you use a resonator not included in
this list, please consult Toshiba or the resonator manufacturer concerning the suitability of the device for your
application.
(2) Undefined functions
In some microcontrollers certain instruction code values do not constitute valid processor instructions. Also, it is
possible that the values of bits in registers will become undefined. Take care in your applications not to use
invalid instructions or to let register bit values become undefined.
Microcontrollers
Design
4-1
4 Precautions and Usage Considerations
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