R8A77800ANBGAV Renesas Electronics America, R8A77800ANBGAV Datasheet - Page 905

• Manufacturer Part Number: R8A77800ANBGAV
• Description: IC SUPERH MPU ROMLESS 449-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

Specifications of R8A77800ANBGAV

• Core Processor: SH-4A
• Core Size: 32-Bit
• Speed: 400MHz
• Connectivity: Audio Codec, MMC, Serial Sound, SCI, SIO, SPI, SSI
• Peripherals: DMA, POR, WDT
• Number Of I /o: 75
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.15 V ~ 1.35 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 449-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

The serial bit clock frequency can be computed using the following formula:
When the HSPI is configured as a slave, the IDIV and CLKC bits are ignored and the HSPI
synchronizes to the externally supplied serial bit clock. The maximum value of the external serial
bit clock that the module can operate with is peripheral clock frequency / 8.
If any of the FBS, CLKP, IDIV or CLKC bit values are changed, then the HSPI will undergo the
HSPI software reset.
Bit
5
4 to 0
Serial bit clock frequency =
Bit Name
IDIV
CLKC4 to
CLKC0
Initial
Value
0
All 0
R/W
R/W
R/W
Initial division ratio
Description
Initial Clock Division Ratio
0: The peripheral clock is divided by a factor of 4
1: The peripheral clock is divided by a factor of 32
Clock Division Count
These bits determine the number of intermediate
frequency cycles long both the high and low periods of
the serial bit clock.
00000: 1 intermediate frequency cycle.
00001: 2 Intermediate frequency cycles.
00010: 3 intermediate frequency cycles.
11111: 32 intermediate frequency cycles.
initially to create an intermediate frequency, which is
further divided to create the serial bit clock when
master mode.
initially to create an intermediate frequency, which is
further divided to create the serial bit clock when
master mode.
:
Peripheral clock frequency
Serial bit clock frequency = Intermediate
frequency / 2.
Serial bit clock frequency = Intermediate
frequency / 4.
Serial bit clock frequency = Intermediate
frequency / 6.
Serial bit clock frequency = Intermediate
frequency / 64.
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Section 23 Serial Protocol Interface (HSPI)
((Clock division count + 1)
Rev.1.00 Dec. 13, 2005 Page 853 of 1286
REJ09B0158-0100
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