HD4074329S Renesas Electronics America, HD4074329S Datasheet - Page 45

• Manufacturer Part Number: HD4074329S
• Description: MCU 4-Bit HMCS400 CISC 20KB EPROM 3.3V/5V 64-Pin SDIP
• Manufacturer: Renesas Electronics America

Specifications of HD4074329S

• Package: 64SDIP
• Family Name: HMCS400
• Maximum Speed: 4.5 MHz
• Ram Size: 268 Byte
• Program Memory Size: 20 KB
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 4 Bit
• Program Memory Type: EPROM
• Number Of Programmable I/os: 35
• On-chip Adc: 4-chx8-bit
• Operating Temperature: -20 to 75 °C
• Number Of Timers: 3

HD404328 Series
D Port (D
–D
): Consist of 9 input/output pins and 2 input pins. Pins D
–D
are high-current I/O pins, D
0
10
0
7
8
is an ordinary input/output pin, and D
and D
are input-only pins. These pins are set by the SED and
9
10
SEDD instructions, reset by the RED and REDD instructions, and tested by the TD and TDD instructions.
The operating modes of D
–D
are set by bits 2 and 3 of port mode register A (PMRA) and bits 0 and 1 of
8
10
port mode register B (PMRB), as shown in figure 24. The on/off status of the output buffer is controlled by
D port data control registers (DCRB, DCRC, and DCRD) that are mapped to memory addresses.
R Ports: Accessed in 4-bit units. Data is input to these ports by the LAR and LBR instructions and output
from them by the LRA and LRB instructions. The on/off status of the output buffers of the R ports are
controlled by R port data control registers (DCR0–DCR5) that are mapped to memory addresses.
are multiplexed with pins SCK, SI, SO, and BUZZ, respectively. The operating modes of
Pins R1
–R1
0
3
these pins are controlled by bit 3 of the serial mode register (SMR), bits 1 and 0 of port mode register A
(PMRA), and bit 2 of port mode register C (PMRC), as shown in figure 24.
Ports R2–R5 are multiplexed with SEG1–SEG16. The functions of these pins must be specified by the
LCD output register (LOR: $015).
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