
MC68HC705P6A
—
Rev. 2.0
Advance Information
MOTOROLA
General Description
19
Advance Information
—
MC68HC705P6A
Section 1. General Description
1.1 Contents
1.2
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
1.3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
1.4
1.4.1
1.4.2
1.4.2.1
1.4.2.2
1.4.2.3
1.4.3
1.4.4
1.4.5
1.4.6
Functional Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
V
DD
and V
SS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
OSC1 and OSC2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Ceramic Resonator . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
External Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
PA0
–
PA7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
PB5/SDO, PB6/SDI, and PB7/SCK . . . . . . . . . . . . . . . . . . .24
PC0-PC2, PC3/AD3, PC4/AD2, PC5/AD1, PC6/AD0,
and PC7/V
REFH
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
PD5 and PD7/TCAP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
TCMP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
IRQ/V
PP
(Maskable Interrupt Request) . . . . . . . . . . . . . . . .25
1.4.7
1.4.8
1.4.9
1.2 Introduction
The MC68HC705P6A is an EPROM version of the MC68HC05P6
microcontroller. It is a low-cost combination of an M68HC05 Family
microprocessor with a 4-channel, 8-bit analog-to-digital (A/D) converter,
a 16-bit timer with output compare and input capture, a serial
communications port (SIOP), and a computer operating properly (COP)
watchdog timer. The M68HC05 CPU core contains 176 bytes of RAM,
4672 bytes of user EPROM, 239 bytes of bootloader ROM, and 21
input/output (I/O) pins (20 bidirectional, 1 input-only). This device is