ADUC7025BCPZ32-RL7 AD [Analog Devices], ADUC7025BCPZ32-RL7 Datasheet - Page 77

• Manufacturer Part Number: ADUC7025BCPZ32-RL7
• Description: Precision Analog Microcontroller 12-bit Analog I/O, ARM7TDMI MCU
• Manufacturer: AD [Analog Devices]

Table 75. T1CON MMR Bit Descriptions
Bit
31:18
17
16:12
11:9
8
7
6
5:4
00
01
10
11
3:0
T1CLRI Register
Name
T1CLRI
T1CLRI is an 8-bit register. Writing any value to this register
clears the Timer1 interrupt.
Value
000
001
010
011
0000
0100
1000
1111
Address
0xFFFF032C
Description
Reserved.
Event Select Bit. Set by user to enable time
capture of an event. Cleared by user to
disable time capture of an event
Event Select Range, 0 to 31. These events are
as described in Table 72. All events are offset
by two, that is, event 2 in Table 72 becomes
event zero for the purposes of Timer1.
Clock Select.
Core Clock (HCLK).
External 32.768 kHz Crystal.
P1.0 Raising Edge Triggered.
P0.6 Raising Edge Triggered.
Count Up. Set by user for Timer1 to count up.
Cleared by user for Timer1 to count down by
default.
Timer1 enable bit. Set by user to enable
Timer1. Cleared by user to disable Timer1 by
default.
Timer1 Mode. Set by user to operate in
periodic mode. Cleared by user to operate in
free-running mode. Default mode.
Format.
Binary.
Reserved.
Hr:Min:Sec:Hundredths (23 hours to 0 hour).
Hr:Min:Sec:Hundredths (255 hours to 0 hour).
Prescale:
Source Clock/1.
Source Clock/16.
Source Clock/256.
Source Clock/32768.
Default Value
0xFF
Access
W
Rev. A | Page 77 of 92
T1CAP Register
Name
T1CAP
T1CAP is a 32-bit register. It holds the value contained in
T1VAL when a particular event occurred. This event must be
selected in T1CON.
Timer2 (Wake-Up Timer)
Timer2 is a 32-bit wake-up timer (count-down or count-up)
with a programmable prescaler. The source can be the 32 kHz
external crystal, the core clock frequency, or the internal 32 kHz
oscillator. The clock source can be scaled by a factor of 1, 16,
256, or 32,768. The wake-up timer continues to run when the
core clock is disabled.
The counter can be formatted as plain 32-bit value or as
Hours: Minutes: Seconds: Hundredths.
Timer2 can be used to start ADC conversions as shown in the
block diagram Figure 65.
Timer2 interface consists in four MMRS: T2LD, T2VAL,
T2CON, and T2CLRI.
T2LD Register
Name
T2LD
T2LD is a 16-bit register load register.
T2VAL Register
Name
T2VAL
T2VAL is a 16-bit read-only register that represents the current
state of the counter.
OSCILLATOR
EXTERNAL
INTERNAL
CRYSTAL
HCLK
ADuC7019/20/21/22/24/25/26/27
Address
0xFFFF0330
Address
0xFFFF0340
Address
0xFFFF0344
Figure 65. Timer2 Block Diagram
PRESCALER
/1, 16, 256
OR 32768
Default Value
0x00000000
Default Value
0x00000000
Default Value
0xFFFFFFFF
COUNTER
UP/DOWN
TIMER2
VALUE
32-BIT
32-BIT
LOAD
TIMER2 IRQ
Access
R
Access
R/W
Access
R