MC80F0424 Datasheet, PDF (74/135 Pages) List of Unclassifed Manufacturers – 8-BIT SINGLE-CHIP MICROCONTROLLERS

MC80F0424/0432/0448
Preliminary
TM4
X_IN PIN
INT3 PIN
7
6
5
4
3
2
1
0
-
- CAP4 T4CK2 TB4TCCKL1 T4CK0 T4CN T4ST
XX
1
X
X
XX
X
ADDRESS: 0DC_H
INITIAL VALUE: 00_H
X means the value of "0" or "1" corresponding to user operation
T4CK[2:0]
÷2
000
÷4
001
÷8
010
÷ 16
011
÷ 64
100
÷ 256
101
÷ 1024 ₁₁₀
÷ 2048 ₁₁₁
MUX
T4CN
IEDS[1:0]
“01”
“10”
“11”
T4ST
0: Stop
1: Clear and start
TDR4H + TDR4L
(16-bit)
clear
Capture
CDR4H + CDR4L
(16-bit)
Higher byte Lower byte
CAPTURE DATA
INT3IF
INT3
INTERRUPT
Figure 14-19 16-bit Capture Mode of Timer 4
Example 1:
Timer0 = 16-bit timer mode, 0.5s at 4MHz
LDM
LDM
LDM
LDM
SET1
EI
:
:
Example 2:
TM0,#0000_1111B;8uS
TM1,#0100_1100B;16bit Mode
TDR0,#<62499 ;8uS X 62500
TDR1,#>62499 ;=0.5s
T0E
Timer0 = 16-bit event counter mode
LDM
LDM
LDM
LDM
LDM
SET1
PSR0,#0001_0000B;EC0 Set
TM0,#0001_1111B;CounterMode
TM1,#0100_1100B;16bit Mode
TDR0,#<0FFFFH ;
TDR1,#>0FFFFH ;
T0E
EI
:
:
Example 3:
Timer0 = 16-bit capture mode
LDM
LDM
LDM
LDM
LDM
LDM
SET1
SET1
EI
:
:
PSR0,#0000_0001B;INT0 set
TM0,#0010_1111B;CaptureMode
TM1,#0100_1100B;16bit Mode
TDR0,#<0FFFFH ;
TDR1,#>0FFFFH ;
IEDS,#01H ;Falling Edge
T0E
INT0E
70
MAR. 2005 Ver 0.2