MC68HC11P2 Datasheet, PDF (140/268 Pages) Motorola, Inc – Microcontrollers

Timing System
Freescale Semiconductor, Inc.
used for an output compare function, it cannot be written directly as if it
were a general-purpose output. Each of the output compare functions
(OC[5:2]) is related to one of the port A output pins. Output compare 1
(OC1) has extra control logic, allowing it optional control of any
combination of the PA[7:3] pins. The PA7 pin can be used as a general-
purpose I/O pin, as an input to the pulse accumulator or as an OC1
output pin.
÷2
Oscillator and
clock generator
÷4 ^÷2
Baud
÷ 1, 2, 3, 4, 5,…, 8191
÷ 16
Prescaler
÷ 2, 4, 8,16, 32, 64, 128
SPR[2:0]
E / 2⁶
E / 2¹³
Prescaler
÷ 1, 4, 8, 16
PR[1:0]
Prescaler
÷ 1, 2, 4, 8
RTR[1:0]
÷4
E / 2¹⁵
Prescaler
÷ 1, 4, 16, 64
CR[1:0]
TOF
TCNT
Set
Q
IC/OC
FF1
Reset Q
+
SCI receiver clock
SCI transmitter clock
E clock
Internal bus clock (PH2)
SPI
Pulse accumulator
Real time interrupt
Set
Q
FF2
Reset Q
Clear COP timer
System reset
Force COP reset
Technical Data
Timing System
For More Information On This Product,
Go to: www.freescale.com
MC68HC11P2 — Rev 1.0