HD4074329S Renesas Electronics America, HD4074329S Datasheet - Page 30

• 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
Operating Modes
The MCU has five operating modes that are specified by how the clock is used. The functions available in
each mode are listed in table 19, and operations are shown in table 20. Transitions between operating
modes are shown in figure 10.
Table 19
Activation method
Status
Cancellation method
Notes: OP: indicates in operation
26
1. To reduce current dissipation, stop all oscillation in external circuits.
2. Refer to the Interrupt Frame section for details.
3. Output pins are at high impedance.
4. Subactive mode is an optional function; specify it on the function option list.
5. The A/D converter does not operate.
6. Port mode register B retains the contents it had in active mode.
Functions Available in Each Operating Mode
System
oscillator
Subsystem
oscillator
Instruction
execution
(ø
Interrupt
function
interrupt (ø
Clock function
interrupt (ø
RAM
Registers/flags OP
I/O
CPU
)
PER
CLK
)
)
Mode Name
Active
RESET
cancellation,
interrupt
request
OP
OP
OP
OP
OP
OP
OP
RESET input,
STOP/SBY
instruction
Standby
SBY
instruction
OP
OP
Stopped
OP
OP
Retained
Retained
Retained
RESET input
interrupt
request
Stop
TMA3 = 0
STOP
instruction
Stopped
*
Stopped
Stopped
Stopped
Retained
Reset*
Reset*
RESET input
1
OP
6
3
Watch
TMA3 = 1
STOP
instruction
Stopped
OP
Stopped
Stopped
*
Retained
Retained
Retained
RESET input,
INT
A interrupt
request
2
OP
0
or timer
Subactive
INT
A interrupt
request from
watch mode
Stopped
OP
OP
*
*
OP
Retained/
operating
OP
RESET input,
STOP/SBY
instruction
5
2
OP
OP
0
or timer
*4