mc68hc05pl4b Freescale Semiconductor, Inc, mc68hc05pl4b Datasheet - Page 12

• Manufacturer Part Number: mc68hc05pl4b
• Description: Low-cost Single-chip Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

GENERAL RELEASE SPECIFICATION
1.2
1-2
OSC2
RESET
OSC1
VDD
VSS
††
†
††
Available on MC68HC05PL4 only.
Available on MC68HC05PL4B only.
MCU BLOCK DIAGRAM
A line over a signal name indicates an active low signal. Any reference to voltage,
current, or frequency speci ed in the following sections will refer to the nominal
values. The exact values and their tolerance or limits are speci ed in Electr ical
Speci cations section.
( N OPTIONAL)
POWER
15
M68HC05
OSC
CPU
USER RAM - 256 BYTES
USER ROM - 4k BYTES
12
0
(RC: 500kHz or 20kHz)
CONDITION CODE REGISTER
0
FREQUENCY OSC
Figure 1-1. MC68HC05PL4 Block Diagram
Freescale Semiconductor, Inc.
0
VERY LOW
For More Information On This Product,
0
PROGRAM COUNTER
7
7
0
7
1 1
1
INDEX REGISTER
STACK POINTER
ACCUMULATOR
5
1
1 H I N Z C
4
Go to: www.freescale.com
GENERAL DESCRIPTION
April 30, 1998
0
0
0
0
0
NOTE
INTERRUPT
KEYBOARD
PROGRAMMABLE TIMER
WATCHDOG
MODULE
DRIVE
DTMF
SYSTEM
LED
8-BIT RELOADABLE
EVENT TIMER
16-BIT
4
4
8
MC68HC05PL4
PB0/KBI0
PB1/KBI1
PB2/KBI2
PB3/KBI3
PB4- PB7
PA6
PA5
PA4
PA3/TCMP
PA2/TCAP
PA1/DTMF
PA0
LED/IRQ
PC0 - PC7
†
REV 2.0