AT89LP216-20PI ATMEL [ATMEL Corporation], AT89LP216-20PI Datasheet - Page 31
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AT89LP216-20PI
Manufacturer Part Number
AT89LP216-20PI
Description
Microcontroller with 2K Bytes Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT89LP216-20PI.pdf
(90 pages)
- Current page: 31 of 90
- Download datasheet (2Mb)
Table 14-2.
3621A–MICRO–6/06
Gate
C/T
M1
M0
TMOD = 88H
Not Bit Addressable
Gating control when set. Timer/Counter x is enabled only
while INTx pin is high and TRx control pin is set. When
cleared, Timer x is enabled whenever TRx control bit
is set.
Timer or Counter Selector cleared for Timer operation
(input from internal system clock). Set for Counter
operation (input from Tx input pin).
Timer 1 Mode bit 1
Timer 1 Mode bit 0
M1
0
0
1
1
1
Timer SFR
TCON
TMOD
TL0
TL1
TH0
TH1
TCONB
RL0
RL1
RH0
RH1
TMOD: Timer/Counter Mode Control Register
GATE
7
M0
0
1
0
1
1
C/T
6
Timer1
Mode
0
1
2
3
3
Purpose
Control
Mode
Timer 0 low-byte
Timer 1 low-byte
Timer 0 high-byte
Timer 1 high-byte
Mode
Timer 0 reload low-byte
Timer 1 reload low-byte
Timer 0 reload high-byte
Timer 1 reload high-byte
M1
5
Operating Mode
Variable 9 - 16-bit Timer Mode.
8-bit Timer/Counter THx with TLx as 1 - 8-bit prescaler.
16-bit Auto-Reload Mode.
16-bit Timer/Counters THx and TLx are cascaded; there is no prescaler.
8-bit Auto Reload.
8-bit auto-reload Timer/Counter THx holds a value which is to be
reloaded into TLx each time it overflows.
Split Timer Mode.
(Timer 0) TL0 is an 8-bit Timer/Counter controlled by the standard
Timer 0 control bits. TH0 is an 8-bit timer only controlled by Timer 1
control bits.
(Timer 1) Timer/Counter 1 stopped.
M0
4
GATE
3
Address
8CH
8DH
8AH
8BH
88H
89H
91H
92H
93H
94H
95H
AT89LP216 [Preliminary]
Timer 0 gate bit
Timer 0 counter/timer select bit
Timer 0 M1 bit
Timer 0 M0 bit
C/T
2
Timer0
Reset Value = 0000 0000B
M1
Bit-Addressable
1
Yes
No
No
No
No
No
No
No
No
No
No
M0
0
31
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