PIC10F204-E/P Microchip Technology, PIC10F204-E/P Datasheet - Page 32

• Manufacturer Part Number: PIC10F204-E/P
• Description: IC PIC MCU FLASH 256X12 8DIP
• Manufacturer: Microchip Technology
• Series: PIC® 10Fr

Specifications of PIC10F204-E/P

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: POR, WDT
• Number Of I /o: 3
• Program Memory Size: 384B (256 x 12)
• Program Memory Type: FLASH
• Ram Size: 16 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• Processor Series: PIC10F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 16 B
• Interface Type: USB
• Maximum Clock Frequency: 4 MHz
• Number Of Programmable I/os: 4
• Number Of Timers: 1
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120
• Minimum Operating Temperature: - 40 C
• For Use With: AC103003 - BOARD DEMO PIC10F CAP TOUCHAC162059 - HEADER INTRFC MPLAB ICD2 8/14PINAC164037 - MODULE SKT 6L PROMATE II SOT23
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details

PIC10F200/202/204/206
FIGURE 6-3:
TABLE 6-1:
6.1
When an external clock input is used for Timer0, it must
meet certain requirements. The external clock require-
ment is due to internal phase clock (T
tion. Also, there is a delay in the actual incrementing of
Timer0 after synchronization.
DS41239D-page 30
01h
N/A
N/A
Legend: Shaded cells not used by Timer0. – = unimplemented, x = unknown, u = unchanged.
Note 1:
Address
PC
(Program
Counter)
Instruction
Fetch
Timer0
Instruction
Executed
Using Timer0 with an External
Clock (PIC10F200/202)
The TRIS of the T0CKI pin is overridden when T0CS = 1.
TMR0
OPTION
TRISGPIO
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
T0
PC – 1
Name
REGISTERS ASSOCIATED WITH TIMER0
(1)
TIMER0 TIMING: INTERNAL CLOCK/PRESCALE 1:2
MOVWF TMR0 MOVF TMR0,W MOVF TMR0,W MOVF TMR0,W MOVF TMR0,W MOVF TMR0,W
Timer0 – 8-bit Real-Time Clock/Counter
T0 + 1
GPWU
PC
Bit 7
—
OSC
GPPU
Bit 6
Write TMR0
executed
—
) synchroniza-
PC + 1
T0CS
Bit 5
—
Read TMR0
reads NT0
PC + 2
T0SE
Bit 4
—
I/O Control Register
Bit 3
PSA
6.1.1
When no prescaler is used, the external clock input is
the same as the prescaler output. The synchronization
of T0CKI with the internal phase clocks is accom-
plished by sampling the prescaler output on the Q2 and
Q4 cycles of the internal phase clocks (Figure 6-4).
Therefore, it is necessary for T0CKI to be high for at
least 2 T
for at least 2 T
Refer to the electrical specification of the desired
device.
When a prescaler is used, the external clock input is
divided by the asynchronous ripple counter-type
prescaler, so that the prescaler output is symmetrical.
For the external clock to meet the sampling require-
ment, the ripple counter must be taken into account.
Therefore, it is necessary for T0CKI to have a period of
at least 4 T
by the prescaler value. The only requirement on T0CKI
high and low time is that they do not violate the
minimum pulse width requirement of Tt0H. Refer to
parameters 40, 41 and 42 in the electrical specification
of the desired device.
Read TMR0
reads NT0
NT0
PC + 3
Bit 2
PS2
OSC
OSC
EXTERNAL CLOCK
SYNCHRONIZATION
(and a small RC delay of 2 Tt0H) and low
Bit 1
Read TMR0
reads NT0
PS1
OSC
(and a small RC delay of 4 Tt0H) divided
PC + 4
(and a small RC delay of 2 Tt0H).
Bit 0
PS0
© 2007 Microchip Technology Inc.
Read TMR0
reads NT0 + 1
---- 1111
xxxx xxxx
1111 1111
Power-On
PC + 5
Value on
Reset
Read TMR0
reads NT0 + 2
NT0 + 1
uuuu uuuu
1111 1111
---- 1111
PC + 6
All Other
Value on
Resets