HD6473228F10V Renesas Electronics America, HD6473228F10V Datasheet - Page 127

• Manufacturer Part Number: HD6473228F10V
• Description: MCU 5V 32K,PB-FREE 64-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/325r

Specifications of HD6473228F10V

• Core Processor: H8/300
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: SCI, UART/USART
• Number Of I /o: 53
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: OTP
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Peripherals: -

Bit 2—Busy Enable (BSE): This bit enables or disables output of the busy signal. Do not set BSE
to 1 in the expanded modes (modes 1 and 2).
Bit 2
ISIE
0
1
Bits 1 and 0—Reserved: These bits cannot be modified and are always read as 1.
6.3 Operation
6.3.1 Output Timing of Output Strobe Signal
The output strobe signal is output when the port 3 data register (P3DR) is written or read. The
output strobe signal goes low at the seventh system clock cycle after P3DR is written or read,
remains low for eight system clock cycles, then goes high. Figure 6-2 shows how the output strobe
signal is output after P3DR is written (when OSS = 1).
Note the following point when reading or writing P3DR twice consecutively.
If P3DR is written or read once, then written or read again within 15 states, the output strobe signal
is not output for the second write or read. Figure 6-3 shows an example of this when OSS = 1.
Port 3
Ø
OS
Description
Busy signal output is disabled.
Busy signal output is enabled.
Port 3 write
Figure 6-2. Output Strobe Output Timing (When OSS = 1)
7 system clocks
8 system clocks
118
(Initial value)