MC68HC16Z1CFC16 Freescale Semiconductor, MC68HC16Z1CFC16 Datasheet - Page 217

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MC68HC16Z1CFC16

Manufacturer Part Number
MC68HC16Z1CFC16
Description
IC MPU 1K RAM 16MHZ 132-PQFP
Manufacturer
Freescale Semiconductor
Series
HC16r
Datasheets

Specifications of MC68HC16Z1CFC16

Core Processor
CPU16
Core Size
16-Bit
Speed
16MHz
Connectivity
EBI/EMI, SCI, SPI
Peripherals
POR, PWM, WDT
Number Of I /o
16
Program Memory Type
ROMless
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
132-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-

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9.3.1.2 Status Register
9.3.2 QSPI RAM
9.3.2.1 Receive RAM
9.3.2.2 Transmit RAM
M68HC16 Z SERIES
USER’S MANUAL
SPSR contains information concerning the current serial transmission. Only the QSPI
can set the bits in this register. The CPU16 reads SPSR to obtain QSPI status infor-
mation and writes SPSR to clear status flags.
The QSPI contains an 80-byte block of dual-ported static RAM that can be accessed
by both the QSPI and the CPU16. The RAM is divided into three segments: receive
data RAM, transmit data RAM, and command data RAM. Receive data is information
received from a serial device external to the MCU. Transmit data is information stored
for transmission to an external device. Command control data defines transfer param-
eters. Refer to
Data received by the QSPI is stored in this segment to be read by the CPU16. Data
stored in the receive RAM is right-justified. Unused bits in a receive queue entry are
set to zero by the QSPI upon completion of the individual queue entry. The CPU16 can
access the data using byte, word, or long-word transfers.
The CPTQP value in SPSR shows which queue entries have been executed. The
CPU16 can use this information to determine which locations in receive RAM contain
valid data before reading them.
Data that is to be transmitted by the QSPI is stored in this segment and must be written
by the CPU16 in right-justified form. The QSPI cannot modify information in the trans-
mit RAM. The QSPI copies the information to its data serializer for transmission. Infor-
mation remains in the transmit RAM until overwritten.
51E
500
Figure
Freescale Semiconductor, Inc.
RECEIVE
WORD
RAM
RRD
RR0
RR1
RR2
RRE
RRF
For More Information On This Product,
9-3, which shows RAM organization.
QUEUED SERIAL MODULE
Figure 9-3 QSPI RAM
Go to: www.freescale.com
53E
520
TRANSMIT
WORD
RAM
TRD
TR0
TR1
TR2
TRE
TRF
540
54F
COMMAND
BYTE
RAM
CRD
CRE
CRF
CR0
CR1
CR2
QSPI RAM MAP
9-7

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