PIC16C72A-04/SO Microchip Technology Inc., PIC16C72A-04/SO Datasheet - Page 31

• Manufacturer Part Number: PIC16C72A-04/SO
• Description: 28 PIN, 3.5 KB OTP, 128 RAM, 22 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16C72A-04/SO

• A/d Inputs: 5-Channel, 8-Bit
• Cpu Speed: 5 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 22
• Memory Type: OTP
• Number Of Bits: 8
• Package Type: 28-pin SOIC
• Programmable Memory: 3.5K Bytes
• Ram Size: 128 Bytes
• Speed: 4 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2.5-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

6.0
The Timer2 module timer has the following features:
• 8-bit timer (TMR2 register)
• 8-bit period register (PR2)
• Software programmable prescaler (1:1, 1:4, 1:16)
• Software programmable postscaler (1:1 to 1:16)
• Interrupt on match (TMR2 = PR2)
• Timer2 can be used by SSP and CCP
Timer2 has a control register, shown in Register 6-1.
Timer2 can be shut off by clearing control bit TMR2ON
(T2CON<2>) to minimize power consumption.
Figure 6-1 is a simplified block diagram of the Timer2
module.
REGISTER 6-1:T2CON: TIMER2 CONTROL REGISTER (ADDRESS 12h)
- Readable and writable
- Readable and writable
bit7
1999 Microchip Technology Inc.
bit 7:
bit 6-3:
bit 2:
bit 1-0:
U-0
—
TIMER2 MODULE
Unimplemented: Read as '0'
TOUTPS3:TOUTPS0: Timer2 Output Postscale Select bits
0000 = 1:1 Postscale
0001 = 1:2 Postscale
0010 = 1:3 Postscale
•
•
•
1111 = 1:16 Postscale
TMR2ON: Timer2 On bit
1 = Timer2 is on
0 = Timer2 is off
T2CKPS1:T2CKPS0: Timer2 Clock Prescale Select bits
00 = Prescaler is 1
01 = Prescaler is 4
1x = Prescaler is 16
TOUTPS3 TOUTPS2 TOUTPS1 TOUTPS0 TMR2ON T2CKPS1 T2CKPS0
R/W-0
R/W-0
R/W-0
R/W-0
Preliminary
R/W-0
Additional information on timer modules is available in
the
(DS33023).
FIGURE 6-1:
Note 1: TMR2 register output can be software selected
R/W-0
Sets flag
bit TMR2IF
1:1
PICmicro™
Postscaler
to
by the SSP Module as a baud clock.
1:16
R/W-0
4
PIC16C62B/72A
TMR2
output
Reset
bit0
EQ
TIMER2 BLOCK DIAGRAM
(1)
Mid-Range
R = Readable bit
W = Writable bit
U = Unimplemented bit,
- n = Value at POR reset
Comparator
TMR2 reg
PR2 reg
read as ‘0’
Reference
1:1, 1:4, 1:16
DS35008B-page 31
Prescaler
2
Manual,
F
OSC
/4