HD4074329S Renesas Electronics America, HD4074329S Datasheet - Page 61

• 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

A/D Data Register (ADRL: $017, ADRU: $018): Eight-bit read-only register that is not cleared by a
reset. Note that data read from this register during A/D conversion cannot be guaranteed. After the
completion of A/D conversion, the resultant eight-bit data is held in this register, as shown in figure 36,
until the start of the next conversion.
A/D mode register (AMR): $016
Special flag bits: $020
3
3
AMR
Bit 0
2
2
0
1
1
1
Switching Time
0
0
34 t
67 t
cyc
cyc
Figure 35 A/D Registers
Initial value: 0000, R/W: W
Switching time
Not used
LSON (refer to description of low-power dissipation modes)
WDON (refer to description of timers)
A/D start flag (ADSF)
DTON (refer to description of low-power dissipation modes)
Analog input selection
Bit 3
Bit 2
1
0
1
0
AMR
A/D Start Flag (ADSF)
A/D conversion started
A/D conversion completed
Bit 2
0
1
0
1
HD404328 Series
Analog Input
Selection
AN
AN
AN
AN
0
1
1
2
3
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