Output Port; Output Port Memory Map; Control Of The Output Port - Epson E0C6001 Technical Manual

E0C6001 TECHNICAL SOFTWARE

Output port

memory map
Table 3.2.1 I/O memory map
Address
D3
0
R
0F3H
*1 Initial value following initial reset
*2 Not set in the circuit
*3 Undefined
*4 Reset (0) immediately after being read
*5 Always 0 when being read
*6 Refer to main manual
Control of
the output port
II-16
3.2 Output Port
Register
D2 D1 D0 Name
R01 R00
0
0
BUZZER FOUT
0
R/W
R01
BUZZER
R00
FOUT
The E0C6001 Series have 2 bits for general output ports
(R00, R01). R00 and R01 although can be use for special
use output port as shown in later of this section. The output
port is a read/write register, output pins provide the con-
tents of the register. The states of the output ports (R00,
R01) are decided by the data of address 0F3H. Output ports
can also be read, and output control is possible using the
operation instructions (AND, OR, etc.). The output ports are
all initialized to low level (0) after an initial reset.
SR 1 0
*1
*5
*5
0 High Low
0 ON OFF
0 High Low
0 ON OFF
Comment
R01 output port data
Buzzer ON/OFF control register
R00 output port data
Frequency output ON/OFF control register