TMPR4937XBG-300 Toshiba, TMPR4937XBG-300 Datasheet - Page 518
TMPR4937XBG-300
Manufacturer Part Number
TMPR4937XBG-300
Description
Manufacturer
Toshiba
Datasheet
1.TMPR4937XBG-300.pdf
(552 pages)
Specifications of TMPR4937XBG-300
Family Name
TX49
Device Core Size
64b
Frequency (max)
300MHz
Instruction Set Architecture
RISC
Supply Voltage 1 (typ)
1.5V
Operating Supply Voltage (max)
1.6V
Operating Supply Voltage (min)
1.4V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
484
Package Type
BGA
Lead Free Status / Rohs Status
Compliant
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INT Input Pulse Width Time
NMI Input Pulse Width Time
Notes:
21.5.9
SDCLK[n]
DMAACK[n]
(1) DMAREQ[n]
(2) DMAACK[n]
(3) DMADONE*
Edge Detection: Set the pulse width to 1.1× the GBUSCLK cycle or higher.
Level Detection: There is no AC characteristic definition. Continue asserting DMAREQ[3:0]
The DMAACK[n] signal is synchronous to SDCLK. (It is driven by GUBSCLK inside the chip.
See Chapter 6 for more information.)
The DMAACK[n] signal is asserted by SYSCLK or SDCLK for 3 cycles or more. However, this
is changed by the conditions [1] and [2] below.
[1] DMAC transfer mode (Single Address transfer, Dual Address transfer)
[2] Access time of the device DMAC accesses
•
•
Is asserted for only 1 SYSCLK cycle synchronous to SYSCLK.
Interrupt Interface AC characteristics
Item
When driving an external device with SYSCLK
Is asserted by SYSCLK for at least 3 cycles even in the shortest assertion case.
When driving an external device with SDCLK
Is asserted by SDCLK for at least 3 cycles even in the shortest assertion case. The AC
characteristics for Single Address transfer with SDRAM are tight, so we do not
recommend Single Address transfer.
Figure 21.5.10 Timing Diagram: INT/NMI Interface
until DMAACK[3:0] is received.
t
t
(Tc = 0 – 70°C, V
PW_INT
PW_NMI
Symbol
t
PW_INT
Boot configuration
ADDR[2]=H
Boot configuration
ADDR[2]=L
Boot configuration
ADDR[2]=H
Boot configuration
ADDR[2]=L
21-12
CCIO
/t
PW_NMI
Conditions
Chapter 21 Electrical Characteristics
= 3.3 V ± 0.2 V, V
Assertion Time
CCInt
1/2 × t
1/4 × t
2 × t
t
MCP
MCP
Min.
MCP
MCP
= 1.5 V ± 0.1 V, V
× 1.1
× 1.1
× 1.1
× 1.1
Max.
⎯
⎯
⎯
⎯
SS
= 0 V)
Unit
ns
ns
ns
ns
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