HD6473258P10 Renesas Electronics America, HD6473258P10 Datasheet - Page 93

• 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: -

5.4 Port 3
Port 3 is an 8-bit input/output port that also provides the external data bus and data pins for the
parallel handshaking interface. The function of port 3 depends on the MCU mode as indicated in
table 5-6. For further information on parallel handshaking, see section 6, Parallel Handshaking
Interface.
Table 5-6. Functions of Port 3
Mode 1
Data bus
Pins of port 3 can drive a single TTL load and a 90-pF capacitive load when they are used as output
P2
n
Mode 2
Data bus
Hardware standby
Figure 5-2. Port 2 Schematic Diagram
Mode 3
General-purpose input/output port or parallel handshaking port
Mode 1 or 2
Mode 3
84
WP2D: Write Port 2 DDR
WP2:
RP2:
n = 0 to7
* Set-priority
Write Port 2
Read Port 2
Mode 1 Reset
RP2
Q
Q
P2
P2
S
WP2D
WP2
n
Reset
n
C
DDR
C
DR
R
R
Figure 5-2
D
D
*