GMS90C320 Datasheet, PDF (20/46 Pages) Hynix Semiconductor – HYNIX SEMICONDUCTOR INC. 8-BIT SINGLE-CHIP MICROCONTROLLERS

GMS90C320
Timer 2
Timer 2 is a 16-bit Timer/Counter with an up/down count feature. It can operate either as timer or as an event counter which
is selected by bit C/T2 (T2CON.1). It has three operating modes as shown in Table 5.
Table 5
Timer/Counter 2 Operating Modes
T2CON
Mode RxCLK CP/
or
TR2
TxCLK RL2
16-bit Auto- 0
0
1
reload
0
0
1
0
0
1
0
0
1
16-bit
Capture
0
1
1
0
1
1
Baud Rate 1
X
1
Generator
1
X
1
off
X
X
0
T2MO
D
DECN
T2CON
EXEN
P1.1
T2EX
Remarks
0
0
X reload upon overflow
0
1
↓ reload trigger (falling edge)
1
X
0 Down counting
1
X
1 Up counting
X
0
X 16-bit Timer/Counter (only
up-counting)
X
1
↓ capture
TH1, TL2 → RC2H, RC2L
X
0
X no overflow interrupt request
(TF2)
X
1
↓ extra external interrupt
(“Timer 2”)
X
X
X Timer 2 stops
Input Clock
Internal
External
(P1.0/T2)
-^ƒ---^O----^S----^C---
12
max.
-^ƒ---^O----^S----^C---
24
-^ƒ---^O----^S----^C---
12
max.
-^ƒ---^O----^S----^C---
24
-^ƒ---^O----^S----^C---
12
-
max.
-^ƒ---^O----^S----^C---
24
-
1Note: ↓ =
falling edge
16
OCT. 2000 Ver 1.2