HD6417727F160CV Renesas Electronics America, HD6417727F160CV Datasheet - Page 364

• Manufacturer Part Number: HD6417727F160CV
• Description: IC SH MPU ROMLESS 240QFN
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417727F160CV

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 160MHz
• Connectivity: FIFO, SCI, SIO, SmartCard, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 104
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.7 V ~ 2.05 V
• Data Converters: A/D 6x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 240-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Section 12 Bus State Controller (BSC)
Bit 2—Refresh Control (RFSH): The RFSH bit determines whether or not the refresh operation
of the synchronous DRAM is performed. The timer for generation of the refresh request frequency
can also be used as an interval timer.
Bit 2: RFSH
0
1
Bit 1—Refresh Mode (RMODE): The RMODE bit selects whether to perform an ordinary
refresh or a self-refresh when the RFSH bit is 1. When the RFSH bit is 1 and this bit is 0, a CAS-
before-RAS refresh or an auto-refresh is performed on synchronous DRAM at the period set by
the refresh-related registers RTCNT, RTCOR and RTCSR. When a refresh request occurs during
an external bus cycle, the bus cycle will be ended and the refresh cycle performed. When the
RFSH bit is 1 and this bit is also 1, the synchronous DRAM will wait for the end of any executing
external bus cycle before going into a self-refresh. All refresh requests to memory that is in the
self-refresh state are ignored.
Bit 1: RMODE
0
1
Bit 0—Reserved: This bit is always read as 0. The write value should always be 0.
12.2.6
The PCMCIA control register (RCR) specifies the assert/negate timing of the OE and WE signals
(RD and WE1 pins of this LSI) for the PCMCIA interface connected to areas 5 and 6. Note that
the assertion widths of OE and WE are set using the wait control bits of the WCR2 register.
The PCR register is a 16-bit read/write register. It is initialized at a power-on reset to H'0000.
However, the register is not initialized and the contents remain unchanged at a manual reset and
when in standby mode.
Rev.6.00 Mar. 27, 2009 Page 306 of 1036
REJ09B0254-0600
Initial value:
R/W: R/W
Bit:
PCMCIA Control Register (PCR)
W3
A6
15
0
R/W
W3
A5
14
0
Description
No refresh
Refresh
Description
CAS-before-RAS refresh (RFSH must be 1)
Self-refresh (RFSH must be 1)
R/W
13
—
0
R/W
12
—
0
TED2
R/W
11
A5
0
TED2
R/W
A6
10
0
TEH2
R/W
A5
9
0
TEH2
R/W
A6
0
8
TED1
R/W
A5
7
0
TED0
R/W
A5
0
6
TED1
R/W
A6
5
0
TED0
R/W
A6
0
4
TEH1
R/W
A5
3
0
TEH0
R/W
A5
2
0
(Initial value)
(Initial value)
TEH1
R/W
A6
1
0
TEH0
R/W
A6
0
0