HD6473258P10 Renesas Electronics America, HD6473258P10 Datasheet - Page 130

• Manufacturer Part Number: HD6473258P10
• Description: IC H8 MCU OTP 32K 64DIP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/325r

Specifications of HD6473258P10

• Core Processor: H8/300
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: SCI, UART/USART
• Number Of I /o: 53
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 64-DIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Peripherals: -

1. The sending and receiving H8/325s set their HCSR bits as follows:
2. The sending H8/325 writes the transmit data in the port 3 data register (P3DR). This generates
3. The receiving H8/325 receives the strobe on its input strobe line and latches the data in port 3.
4. The receiving H8/325 reads HCSR, then reads the received data from P3DR. This clears ISF to
5. The input strobe line of the sending H8/325 goes low, setting ISF and generating an input strobe
6. The sending H8/325 reads HCSR, then writes the next transmit data in P3DR. (If it has no next
6.3.5 Interrupts
Regardless of the operating mode or the value of the LTE bit, ISF is always set to 1 when the IS
input changes from high to low. If ISIE is set to 1, an input strobe interrupt (ISI) is requested. In the
software standby mode, LTE must also be set. See section 6.3.3, Operation in Software Standby
Mode.
Sending H8/325:
Receiving H8/325: ISIE = 1, OSE = 1, OSS = 0, LTE = 1, BSE = 0.
an output strobe signal, notifying the receiving H8/325 of data output.
ISF is set to 1, generating an input strobe interrupt.
0 and generates an output strobe signal, notifying the sending H8/325 that the data have been
received.
interrupt.
data to send, it should read P3DR.) This clears ISF to 0 and generates an output strobe signal.
The process now returns to step 3.
Sending H8/325
P3 to P3
Receiving H8/325
OS
IS
H8/325
(sending chip)
7
0
Figure 6-7. Parallel Handshaking Interface Timing Chart (Example)
Write
P3DR
ISIE = 1, OSE = 1, OSS = 1, LTE = 0, BSE = 0.
Interrupt
request
P3DR: Port 3 data register
HCSR: Handshake control/Status register
Read
HCSR
Read
P3DR
121
Interrupt
request
Read
HCSR
Write
P3DR
P3 to P3
IS
OS
H8/325
(receiving chip)
7
Fig 6-7
0