PIC16F87-I/SS Microchip Technology, PIC16F87-I/SS Datasheet - Page 51

• Manufacturer Part Number: PIC16F87-I/SS
• Description: IC MCU FLASH 4KX14 EEPROM 20SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F87-I/SS

• Program Memory Type: FLASH
• Program Memory Size: 7KB (4K x 14)
• Package / Case: 20-SSOP
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 368 B
• Interface Type: SSP/USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163014
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT20SS-1 - SOCKET TRANSITION 18DIP 20SSOPAC164307 - MODULE SKT FOR PM3 28SSOP
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

TABLE 4-4:
 2003 Microchip Technology Inc.
Note 1: If the new clock source is INTOSC or INTOSC postscaler, then the IOFS bit will be set 4 ms after the clock
LP, XT, HS,
LP, XT, HS,
LP, XT, HS
Current
T1OSC,
System
EC, RC
INTRC,
EC, RC
T1OSC
T1OSC
INTRC
INTRC
Clock
change.
F
F
F
F
F
(Due to RESET)
SCS bits <1:0>
OSC
OSC
OSC
OSC
OSC
Modified to:
CLOCK SWITCHING MODES
LP, XT, HS
XT or HS
XT or HS
(T1OSC)
(INTRC)
XT, HS
<2:0> = RC
<2:0> = LP,
<2:0> = LP,
<2:0> = EC
<2:0> = LP,
10
01
00
00
00
or
1024 Clocks
1024 Clocks
8 Clocks of
8 Clocks of
8 Clocks of
8 Clocks of
LP, XT, HS
T1OSC
INTRC
(OST)
(OST)
Delay
EC
RC
or
+
OSTS
Preliminary
bit
0
0
1
1
1
IOFS
1
N/A
N/A
N/A
N/A
bit
(1)
T1RUN
bit
0
1
0
0
0
LP, XT, HS
LP, XT, HS
Postscaler
INTOSC
INTOSC
System
T1OSC
INTRC
Clock
New
EC
RC
or
or
or
PIC16F87/88
The internal RC oscillator
frequency is dependant
upon the IRCF bits.
T1OSCEN bit must be
enabled.
During the 1024 clocks,
program execution is
clocked from the second-
ary oscillator until the
primary oscillator becomes
stable.
When a RESET occurs,
there is no clock transition
sequence.
Instruction execution
and/or peripheral opera-
tion is suspended unless
Two-Speed Start-up mode
is enabled, after which the
INTRC will act as the
system clock until the OST
timer has expired.
Comments
DS30487B-page 49