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5 PERIPHERAL CIRCUITS AND THEIR OPERATION (I/O Memory Map)
Address Bit
Name
00FF23
D7
EPT1
Programmable timer 1 interrupt enable register
D6
EPT0
Programmable timer 0 interrupt enable register
D5
EK1
K10 interrupt enable register
D4
EK0H
K04–K07 interrupt enable register
D3
EK0L
K00–K03 interrupt enable register
D2
ESERR
Serial I/F (error) interrupt enable register
D1
ESREC
Serial I/F (receiving) interrupt enable register
D0
ESTRA
Serial I/F (transmitting) interrupt enable register
00FF24 D7
–
–
D6
FSW100
Stopwatch timer 100 Hz interrupt factor flag
D5
FSW10
Stopwatch timer 10 Hz interrupt factor flag
D4
FSW1
Stopwatch timer 1 Hz interrupt factor flag
D3
FTM32
Clock timer 32 Hz interrupt factor flag
D2
FTM8
Clock timer 8 Hz interrupt factor flag
D1
FTM2
Clock timer 2 Hz interrupt factor flag
D0
FTM1
Clock timer 1 Hz interrupt factor flag
00FF25 D7
FPT1
Programmable timer 1 interrupt factor flag
D6
FPT0
Programmable timer 0 interrupt factor flag
D5
FK1
K10 interrupt factor flag
D4
FK0H
K04–K07 interrupt factor flag
D3
FK0L
K00–K03 interrupt factor flag
D2
FSERR
Serial I/F (error) interrupt factor flag
D1
FSREC
Serial I/F (receiving) interrupt factor flag
D0
FSTRA
Serial I/F (transmitting) interrupt factor flag
00FF30 D7
–
–
D6
–
–
D5
–
–
D4
MODE16
8/16-bit mode selection
D3
CHSEL
TOUT output channel selection
D2
PTOUT
TOUT output control
D1
CKSEL1
Prescaler 1 source clock selection
D0
CKSEL0
Prescaler 0 source clock selection
00FF31 D7
EVCNT
Timer 0 counter mode selection
D6
FCSEL
Timer 0
function selection
D5
PLPOL
Timer 0
pulse polarity
selection
D4
PSC01
Timer 0 prescaler dividing ratio selection
D3
PSC00
D2
CONT0
Timer 0 continuous/one-shot mode selection
D1
PSET0
Timer 0 preset
D0
PRUN0
Timer 0 Run/Stop control
20
Table 5.1.1(c) I/O Memory map (00FF23H–00FF31H)
Function
In timer mode
In event counter mode
Down count timing
in event counter mode
In pulse width
measurement mode
PSC01
PSC00
Prescaler dividing ratio
1
1
Source clock / 64
1
0
Source clock / 16
0
1
Source clock / 4
0
0
Source clock / 1
1
Interrupt
Interrupt
enable
disable
–
(R)
Interrupt
No interrupt
factor is
factor is
generated
generated
(W)
Reset
No operation
(R)
Interrupt
No interrupt
factor is
factor is
generated
generated
(W)
Reset
No operation
–
–
–
16-bit x 1
8-bit x 2
Timer 1
Timer 0
On
f
OSC3
f
OSC3
Event counter
Pulse width
Normal
measurement
With
Without
noise rejector
noise rejector
Rising edge
Falling edge
of K10 input
of K10 input
High level
Low level
measurement
measurement
for K10 input
for K10 input
Continuous
One-shot
Preset
No operation
Run
EPSON
0
SR R/W
Comment
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
–
–
"0" when being read
0
R/W
(R)
0
R/W
0
R/W
0
R/W
0
R/W
(W)
0
R/W
0
R/W
0
R/W
(R)
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
(W)
0
R/W
0
R/W
–
–
Constantry "0" when
–
–
being read
–
–
0
R/W
0
R/W
0
R/W
Off
0
R/W
f
OSC1
0
R/W
f
OSC1
0
R/W
Timer
0
R/W
mode
0
R/W
0
R/W
0
R/W
0
R/W
–
W
"0" when being read
0
R/W
Stop
E0C88832/88862 TECHNICAL MANUAL
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