Specifications

II-20 EPSON S1C62N82 TECHNICAL SOFTWARE
CHAPTER 3: PERIPHERAL CIRCUITS (Input Ports)
Control of
the input port
Table 3.2.1 (b) I/O memory map
Address Comment
Register
D3 D2 D1 D0 Name SR
*1
10
0E8H
0E9H
EIK03 EIK02 EIK01 EIK00
0 0 0 EIK10
R
R/W
EIK03
EIK02
EIK01
EIK00
0
0
0
0
0
0
0
EIK10
0
Interrupt mask register (K10)
Interrupt mask register (K03)
Interrupt mask register (K02)
Interrupt mask register (K01)
Interrupt mask register (K00)
Enable
Enable
Enable
Enable
Mask
Mask
Mask
Mask
Enable Mask
R/W
*5
*5
*5
0EDH
00IK1IK0
R
0
0
IK1
IK0
0
0
Interrupt factor flag (K10)
Interrupt factor flag (K00–K03)
Yes
Yes
No
No
*5
*5
*4
*4
*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
The S1C62N82 has one 4-bit input port (K00–K03) and one
1-bit input port (K10). Input port data can be read as a 4-bit
unit (K00–K03, K10).
The state of the input ports can be obtained by reading the
data (bits D3, D2, D1, D0) of address 0E0H and the data (bit
D0) of address 0E1H. The input ports can be used to send
an interrupt request to the CPU via the input interrupt
condition flag. See Section 3.12 "Interrupt and Halt", for
details.