MBF110
RAH (A3-A0 Address 0001) Write Only
High Order Row Address Register
Bit 0 of this register and RAL form the 9-bit Row Address Register
that selects the row to be converted. The L1 and L2 bits control two
open-drain outputs that can be used to drive LEDs.
MSB
BIT7
L1
BIT6
L2
BIT5
–
BIT4
–
BIT3
–
BIT2
–
BIT1
–
BIT0
RA8
LSB
Bit Number
7
6
[5:1]
0
Bit Name
L1
L2
–
RA8
Function
L1=0, LED1 output low
L1=1, LED1 output high-Z
CAL (A3-A0 Address 0010) Read/Write
Low Order Column Address Register
CAL is a read/write register. Writing to this address writes to the
low-order 8 bits of the 9-bit Column Address Register. The 9-bit
Column Address Register selects a column from 0 through 299.
Writing to CAL causes the analog-to-digital (A/D) converter to
MSB
BIT7
CA7
BIT6
CA6
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L2=0, LED 2 output low
L2=1, LED 2 output high-Z
Reserved, write 0 to these bits.
MSB of Row Address
BIT5
CA5
BIT4
CA4
BIT3
CA3
BIT2
CA2
Function
(WRITE) Low eight bits of Column Address Register.
(READ) Output of A/D converter.
begin digitizing its input. The input of the A/D converter is selected
by bits 7 and 6 of the CAH register. The user should wait until the
row capture is completed before writing to the CAL.
Reading from this address returns the output of the A/D converter.
After writing to CAL, the user should wait until A/D conversion
completes before reading the A/D converter.
LSB
BIT1
CA1
BIT0
CA0
Bit Number
[7:0]
Bit Name
CA[7:0]
Fujitsu Microelectronics, Inc.
5
FUJITSU [ FUJITSU COMPONENT LIMITED. ]
