HD6417032F20V Renesas Electronics America, HD6417032F20V Datasheet - Page 205
HD6417032F20V
Manufacturer Part Number
HD6417032F20V
Description
SH1 ROMLESS LEAD FREE
Manufacturer
Renesas Electronics America
Series
SuperH® SH7030r
Datasheet
1.HD6417034AFI20.pdf
(689 pages)
Specifications of HD6417032F20V
Core Processor
SH-1
Core Size
32-Bit
Speed
20MHz
Connectivity
EBI/EMI, SCI
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
32
Program Memory Type
ROMless
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
112-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6417032F20V
Manufacturer:
TI
Quantity:
201
- Current page: 205 of 689
- Download datasheet (5Mb)
2. Bus release procedure
c. Refresh cycle + bus cycle
The bus release procedure is shown in figure 8.47. Figure 8.47 shows the case where BREQ is
input one state before the break between bus cycles so that tBRQS is satisfied. In the SH7032
and SH7034, the bus is released after the bus cycle in which BREQ is input (if BREQ is input
between bus cycles, after the bus cycle starting next).
The bus is never released during a refresh cycle and the following bus cycle ((a) or (b)
above)) (figure 8.46).
RAS, CAS
A21 to A0
RD, WR
BREQ
BACK
CSn
CK
Figure 8.46 Refresh Cycle and Following Bus Cycle
t
BRQS
Bus cycle
The bus is released after the bus
cycle in which BREQ is input
(if BREQ is input between bus cycles,
after the bus cycle starting next).
Figure 8.47 Bus Release Procedure
Refresh cycle
Cycle during which bus
is not released
high-level output
Strobe pin:
t
t
BZD
BZD
1 bus cycle
t
BACD1
Rev. 7.00 Jan 31, 2006 page 177 of 658
high impedance
Address & data
strobe pins:
Section 8 Bus State Controller (BSC)
t
Bus release
BRQS
t
BACD2
Bus cycle restart
Bus cycle
REJ09B0272-0700
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