MC68HC705X32CFU Freescale Semiconductor, MC68HC705X32CFU Datasheet - Page 25

• Manufacturer Part Number: MC68HC705X32CFU
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC705X32CFU

• Cpu Family: HC05
• Device Core Size: 8b
• Frequency (max): 4MHz
• Interface Type: SCI
• Program Memory Type: EPROM
• Program Memory Size: 32KB
• Total Internal Ram Size: 528Byte
• # I/os (max): 32
• Number Of Timers - General Purpose: 1
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• On-chip Adc: 8-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: PQFP
• Lead Free Status / Rohs Status: Supplier Unconfirmed

2.1
The MC68HC05X16 MCU has two modes of operation, single-chip mode and bootstrap mode. In
the MC68HC05X16 the single-chip mode is the normal user operating frequency
the conditions required to enter each mode on the rising edge of RESET .
Note:
2.1.1
This is the normal user operating mode of the MC68HC05X16. In this mode the device functions
as a self-contained microcomputer (MCU) with all on-board peripherals, including the three 8-bit
I/O ports and the 8-bit input-only port, available to the user. All address and data activity occurs
within the MCU.
MC68HC05X16
MDS
V
V
V
V
V
On the rising edge of RESET, holding the IRQ pin at 2 x V
the MDS pin at V
V
DD
DD
DD
DD
SS
SS
Modes of operation
Single-chip mode
Freescale Semiconductor, Inc.
(or left floating) and IRQ is below V
AND
MODES OF OPERATION AND
OR
OR
OR
OR
For More Information On This Product,
MODES OF OPERATION AND PIN DESCRIPTIONS
V
SS
2V
2V
2V
2V
IRQ
to V
DD
DD
DD
DD
PIN DESCRIPTIONS
DD
Table 2-1 Mode of operation selection
DD
Go to: www.freescale.com
. The device cannot enter single-chip mode unless MDS is tied to
V
SS
TCAP1
V
V
V
V
to V
DD
DD
DD
SS
DD
TCAP2
2
V
V
V
X
X
SS
SS
SS
DD
.
PD3
X
0
1
1
0
PD4
X
0
1
0
1
Single-chip
Reserved for Motorola use
Bootstrap mode:
Serial RAM loader
Jump to RAM + 1
Jump to any address
DD
is equivalent to holding
Mode
Table 2-1
shows
2-1
2