HD64336901G Renesas Technology, HD64336901G Datasheet - Page 285
HD64336901G
Manufacturer Part Number
HD64336901G
Description
(HD64xxx Series) 16-BIT MICROCONTROLLER
Manufacturer
Renesas Technology
Datasheet
1.HD64336901G.pdf
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16.2
Table 16.1 summarizes the input pins used by the A/D converter.
Table 16.1 Pin Configuration
16.3
The A/D converter has the following registers.
16.3.1
There are four 16-bit read-only ADDR registers; ADDRA to ADDRD, used to store the results of
A/D conversion. The ADDR registers, which store a conversion result for each channel, are shown
in table 16.2.
The converted 10-bit data is stored in bits 6 to 15. The lower 6 bits are always read as 0.
The data bus between the CPU and the A/D converter is 8 bits wide. The upper byte can be read
directly from the CPU, however the lower byte should be read via a temporary register. The
temporary register contents are transferred from the ADDR when the upper byte data is read.
When reading ADDR, read the upper bytes only or read in word units. ADDR is initialized to
H'0000.
Pin Name
Analog power supply pin
Analog input pin 0
Analog input pin 1
Analog input pin 2
Analog input pin 3
A/D external trigger input pin
A/D data register A (ADDRA)
A/D data register B (ADDRB)
A/D data register C (ADDRC)
A/D data register D (ADDRD)
A/D control/status register (ADCSR)
A/D control register (ADCR)
A/D Data Registers A to D (ADDRA to ADDRD)
Input/Output Pins
Register Description
Symbol
AV
AN0
AN1
AN2
AN3
ADTRG
CC
I/O
Input
Input
Input
Input
Input
Input
Function
Analog block power supply pin
Analog input pins
External trigger input pin for starting A/D
conversion
Rev. 1.00, 11/03, page 257 of 376
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