MB90473 Datasheet, PDF (58/118 Pages) Fujitsu Component Limited. – 16-Bit Proprietary Microcontroller

MB90470 Series
10. 16-bit reload timer
The 16-bit reload timer provides a choice of two functions, one is an internal clock countdown synchronized with
any of 3 types of internal clock, and the other is an event count mode that counts down at detection of a given
edge of a pulse input externally. This timer defines an underflow as a transition of the count value from 0000H
to FFFFH. Therefore, an underflow will occur at the count value “reload register setting count + 1”. The count
operation includes a choice of reload mode in which the count set value is reloaded at each underflow event,
and one-shot mode in which the count stops at an underflow event. An interrupt can be generated when the
counter reaches an underflow, and the timer is DTC compatible.
(1) Register List
• TMCSR (Timer control status registers)
Timer control status register (high)
0000CBH
15

()
()
14

()
()
13

()
()
12

()
()
11
CSL1
(R/W)
(0)
10
9
8
CSL0 MOD2 MOD1
(R/W) (R/W) (R/W)
(0) (0) (0)
Timer control status register (low)
0000CAH
7
6
MOD0 OUTE
(R/W) (R/W)
(0) (0)
5
OUTL
(R/W)
(0)
4
RELD
(R/W)
(0)
• 16-bit timer register/16-bit reload register
TMR/TMRLR (high)
0000CDH
15
D15
(R/W)
(X)
14
D14
(R/W)
(X)
13
D13
(R/W)
(X)
12
D12
(R/W)
(X)
TMR/TMRLR (low)
0000CCH
7
D07
(R/W)
(X)
6
D06
(R/W)
(X)
5
D05
(R/W)
(X)
4
D04
(R/W)
(X)
3
INTE
(R/W)
(0)
11
D11
(R/W)
(X)
3
D03
(R/W)
(X)
2
1
UF CNTE
(R/W) (R/W)
(0) (0)
0
TRG
(R/W)
(0)
10
D10
(R/W)
(X)
9
D09
(R/W)
(X)
8
D08
(R/W)
(X)
2
D02
(R/W)
(X)
1
D01
(R/W)
(X)
0
D00
(R/W)
(X)
Read/write
Default value
Read/write
Default value
Read/write
Default value
Read/write
Default value
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