
MB90210 Series
36
2. 16-bit Reload Timer 1 (with Event Count Function)
The 16-bit reload timer 1 consists of a 16-bit down counter, a 16-bit reload register, an input pin (TIN), an output
pin (TOUT), and a control register. The input clock can be selected from among three internal clocks and one
external clock. At the output pin (TOUT), the pulses in the toggled output waveform are output in the reload
mode; the rectangular pulses indicating that the timer is counting are in the single-shot mode. The input pin
(TIN) can be used for event input in the event count mode, and for trigger input or gate input in the internal clock
mode.
MB90210 series contains four channels for this timer.
(1) Register Configuration
Timer control status register (TMCSR)
Timer register (TMR)
000039H
00003BH
00003DH
00003FH
ch.0
ch.1
ch.2
ch.3
Address:
Timer control status register (Upper byte)
000038 H
00003AH
00003CH
00003EH
ch.0
ch.1
ch.2
ch.3
Address:
Timer control status register (Lower byte)
15
14
13
12
11
10
9
8
7654
3210
Bit
MDO0
TRG
CNTE
UF
INTE
RELD
OUTL
OUTE
—
MOD1
MOD2
CSL0
CSL1
—
TMCSRx
(—)
(R/W)
(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)
(R/W)
(0)
(R/W)
(0)
(R/W)
(0)
Read/write
Initial value
Read/write
Initial value
→
000041H
000045H
000049H
00004DH
ch.0
ch.1
ch.2
ch.3
Address:
Timer register (Upper byte)
000040H
000044H
000048H
00004CH
ch.0
ch.1
ch.2
ch.3
Address:
Timer register (Lower byte)
15
14
13
12
11
10
9
8
7654
3210
Bit
TMRx
(R)
(X)
(R)
(X)
(R)
(X)
(R)
(X)
(R)
(X)
(R)
(X)
(R)
(X)
(R)
(X)
(R)
(X)
(R)
(X)
(R)
(X)
(R)
(X)
(R)
(X)
(R)
(X)
(R)
(X)
(R)
(X)
Read/write
Initial value
Read/write
Initial value
→