R8A77800ANBGAV Renesas Electronics America, R8A77800ANBGAV Datasheet - Page 727

• 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: -

18.6
18.6.1
When writing to a TMU register, timer count operation must be stopped by clearing the start bit
(STR5 to STR0) for the relevant channel in TSTR.
Note that TSTR can be written to, and the UNF and ICPF bits in TCR can be cleared while the
count is in progress. When the flags (UNF and ICPF) are cleared while the count is in progress,
make sure not to change the values of bits other than those being cleared.
18.6.2
Reading from TCNT is performed synchronously with the timer count operation. Note that when
the timer count operation is performed simultaneously with reading from a register, the
synchronous processing causes the TCNT value before the count-down operation to be read as the
TCNT value.
18.6.3
When selecting the output clock of the on-chip RTC for the count clock, reset the RTC frequency
divider circuit.
18.6.4
Ensure that the external clock (TCLK) input frequency for channels 0, 1 and 2 does not exceed
Pck/4.
Usage Notes
Register Writes
Reading from TCNT
Reset RTC Frequency Divider Circuit
External Clock Frequency
Rev.1.00 Dec. 13, 2005 Page 675 of 1286
Section 18 Timer Unit (TMU)
REJ09B0158-0100