HD4074329S Renesas Electronics America, HD4074329S Datasheet - Page 54

• 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
TMC
Bit 2
0
1
Pulse Output
The MCU has a built-in pulse output function called BUZZ. The pulse frequency can be selected from the
prescaler S’ s outputs, and the output frequency depends on the state of port mode register C (PMRC:
$012), as shown in table 27. The duty cycle of the pulse output is fixed at 50%. When the pulse output
function is used, the R1
Table 27
PMRC
Bit 1
0
1
50
Port Mode Register C
Bit 1
0
1
0
1
Bit 0
0
1
0
1
3
/BUZZ pin must be specified as BUZZ by PMRC.
Bit 0
0
1
0
1
0
1
0
1
Prescaler Division Ratio
1024
512
256
128
Input Clock Period
2048 t
1024 t
512 t
128 t
32 t
8 t
4 t
2 t
cyc
cyc
cyc
cyc
cyc
cyc
cyc
cyc