MC908AZ60ACFU Freescale Semiconductor, MC908AZ60ACFU Datasheet - Page 213

no-image

MC908AZ60ACFU

Manufacturer Part Number
MC908AZ60ACFU
Description
IC MCU FLASH 8.4MHZ 60K 64QFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet

Specifications of MC908AZ60ACFU

Core Processor
HC08
Core Size
8-Bit
Speed
8.4MHz
Connectivity
CAN, SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
52
Program Memory Size
60KB (60K x 8)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 15x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC908AZ60ACFU
Manufacturer:
MOTOROLA
Quantity:
84
Part Number:
MC908AZ60ACFU
Manufacturer:
FREESCAL
Quantity:
2 309
Part Number:
MC908AZ60ACFU
Manufacturer:
FREESCALE
Quantity:
400
Part Number:
MC908AZ60ACFU
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC908AZ60ACFU
Manufacturer:
FREESCALE
Quantity:
400
Part Number:
MC908AZ60ACFU
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
Part Number:
MC908AZ60ACFU1L87J
Manufacturer:
MOT
Quantity:
143
Part Number:
MC908AZ60ACFU3K85K
Manufacturer:
FUJI
Quantity:
1 078
Part Number:
MC908AZ60ACFUE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC908AZ60ACFUE
Manufacturer:
FREESCALE
Quantity:
20 000
Part Number:
MC908AZ60ACFUE
Manufacturer:
FREESCALE
Quantity:
8 908
Part Number:
MC908AZ60ACFUE1L87J
Manufacturer:
TEMIC
Quantity:
350
Part Number:
MC908AZ60ACFUER
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
19.6 Error Conditions
Two flags signal SPI error conditions:
19.6.1 Overflow Error
The overflow flag (OVRF in SPSCR) becomes set if the SPI receive data register still has unread data
from a previous transmission when the capture strobe of bit 1 of the next transmission occurs. (See
19-4
register so that the unread data can still be read. Therefore, an overflow error always indicates the loss
of data.
OVRF generates a receiver/error CPU interrupt request if the error interrupt enable bit (ERRIE in SPSCR)
is also set. MODF and OVRF can generate a receiver/error CPU interrupt request. (See
is not possible to enable only MODF or OVRF to generate a receiver/error CPU interrupt request.
However, leaving MODFEN low prevents MODF from being set.
If an end-of-block transmission interrupt was meant to pull the MCU out of wait, having an overflow
condition without overflow interrupts enabled causes the MCU to hang in wait mode. If the OVRF is
enabled to generate an interrupt, it can pull the MCU out of wait mode instead.
If the CPU SPRF interrupt is enabled and the OVRF interrupt is not, watch for an overflow condition.
Figure 19-7
Freescale Semiconductor
1. Overflow (OVRF in SPSCR) — Failing to read the SPI data register before the next byte enters the
2. Mode fault error (MODF in SPSCR) — The MODF bit indicates that the voltage on the slave select
and
shift register sets the OVRF bit. The new byte does not transfer to the receive data register, and
the unread byte still can be read by accessing the SPI data register. OVRF is in the SPI status and
control register.
pin (SS) is inconsistent with the mode of the SPI. MODF is in the SPI status and control register.
Figure
shows how it is possible to miss an overflow.
READ SPSCR
READ SPDR
19-5.) If an overflow occurs, the data being received is not transferred to the receive data
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
OVRF
SPRF
1
2
3
4
BYTE 1
BYTE 1 SETS SPRF BIT.
CPU READS SPSCR WITH SPRF BIT SET
AND OVRF BIT CLEAR.
CPU READS BYTE 1 IN SPDR,
CLEARING SPRF BIT.
BYTE 2 SETS SPRF BIT.
Figure 19-7. Missed Read of Overflow Condition
1
2
3
BYTE 2
4
5
6
7
8
BYTE 3
5
CPU READS SPSCRW WITH SPRF BIT SET
AND OVRF BIT CLEAR.
BYTE 3 SETS OVRF BIT. BYTE 3 IS LOST.
CPU READS BYTE 2 IN SPDR, CLEARING SPRF BIT,
BUT NOT OVRF BIT.
BYTE 4 FAILS TO SET SPRF BIT BECAUSE
OVRF BIT IS SET. BYTE 4 IS LOST.
6
7
BYTE 4
8
Figure
Error Conditions
19-9). It
Figure
213

Related parts for MC908AZ60ACFU