A/D Data Register (Adcr0/Adcr1) - Fujitsu F2MCTM-16LX Hardware Manual

18.3.3

A/D Data Register (ADCR0/ADCR1)

The A/D data register (ADCR0/ADCR1) stores the digital value generated as the
conversion result. The ADCR0 stores the lower 8-bit, and ADCR1 stores the most
significant 2-bit of the conversion result. This register is rewritten each time the
conversion complete and stores last conversion value normally.
A/D Data Register (ADCR0/ADCR1)
Data register (High)
ADCR1
Data register (Low)
ADCR0
R : Read only
X : Indeterminate
-
: Undefined bit
Table 18.3-4 Functions of A/D Data Register (ADCR0/ADCR1)
bit15
to
bit10
bit9
to
bit0
Figure 18.3-4 A/D Data Register (ADCR
15 14
Address
00006B
- -
H
- -
7 6
Address
00006A
D7
D6
H
R R
Bit Name
Undefined bits 1 is always read at reading.
D9 to D0: These bits store the A/D conversion results.
A/D conversion data When resolution set in 10 bits (S10=0):
bits
When resolution set in 8 bits (S10=1):
Note:
• Writing to this register is disabled.
• Use a word instruction (MOVW) to read the A/D conversion
CHAPTER 18 8-/10-BIT A/D CONVERTER
0/ADCR1
13 12 11 10
- - - -
- - - -
5 4 3 2
D5 D4 D3 D2
R R R R
Conversion data is stored in the 10 bits from D9 to D0.
Conversion data is stored in the 8 bits from D7 to D0. In this
case, the read values of D9 and D8 are 1.
results stored in the A/D conversion data bits (D9 to D0).
)
9 8
Reset value
XXXXXX00
D9
D8
R R
1 0
Reset value
0 0 0 0 0 0 0 0
D1 D0
R R
Function
B
B
351