MC68332ACPV25 Freescale Semiconductor, MC68332ACPV25 Datasheet - Page 32

• Manufacturer Part Number: MC68332ACPV25
• Description: IC MCU 32-BIT 25MHZ A MASK
• Manufacturer: Freescale Semiconductor
• Series: M683xxr

Specifications of MC68332ACPV25

• Core Processor: CPU32
• Core Size: 32-Bit
• Speed: 25MHz
• Connectivity: EBI/EMI, SCI, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 15
• Program Memory Type: ROMless
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Other names: Q1501580

CSPAR1 —Chip Select Pin Assignment Register 1
32
MOTOROLA
RESET:
15
0
0
CSPAR1 contains five 2-bit fields that determine the functions of corresponding chip-select pins.
CSPAR1[15:10] are not used. These bits always read zero; writes have no effect.
At reset, either the alternate function (01) or chip-select function (11) can be encoded. DATA pins are
driven to logic level one by a weak interval pull-up during reset. Encoding is for chip-select function un-
less a data line is held low during reset. Note that bus loading can overcome the weak pull-up and hold
pins low during reset. The following table shows the hierarchical selection method that determines the
reset functions of pins controlled by CSPAR1.
When a pin is programmed for discrete output or alternate function, internal chip-select logic still func-
tions and can be used to generate DSACK or AVEC internally on an address match.
Port size is determined when a pin is assigned as a chip select. When a pin is assigned to an 8-bit port,
the chip select is asserted at all addresses within the block range. If a pin is assigned to a 16-bit port,
the upper/lower byte field of the option register selects the byte with which the chip select is associated.
DATA7
A pin programmed as a discrete output drives an external signal to the value specified in the port C
pin data register (PORTC), with the following exceptions:
1
1
1
1
1
0
CSPAR0 Field
14
0
0
CSPA1[4]
CSPA1[3]
CSPA1[2]
CSPA1[1]
CSPA1[0]
1. No discrete output function is available on pins BR, BG, or BGACK.
2. ADDR23 provides E-clock output rather than a discrete output signal.
DATA6
13
Data Bus Pins at Reset
0
0
X
1
1
1
1
0
12
0
0
DATA5
X
X
Freescale Semiconductor, Inc.
1
1
1
0
11
For More Information On This Product,
0
0
Table 15 Reset Pin Function of CS[10:6]
Chip Select Signal
Table 14 CSPAR1 Pin Assignments
DATA4
10
0
0
1
1
0
X
X
X
CS10
CS9
CS8
CS7
CS6
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DATA7
9
CSPA1[4]
DATA3
1
0
X
X
X
X
8
1
ADDR23
ADDR23 ADDR22 ADDR21 ADDR20 ADDR19
DATA
CS10/
CS10
CS10
CS10
CS10
CS10
[7:6]
7
CSPA1[3]
Alternate Signal
Chip-Select/Address Bus Pin Function
ADDR23
ADDR22
ADDR21
ADDR20
ADDR19
6
1
ADDR22
ADDR22 ADDR21 ADDR20 ADDR19
CS9/
CS9
CS9
CS9
CS9
DATA
[7:5]
5
CSPA1[2]
ADDR21
ADDR21 ADDR20 ADDR19
CS8/
CS8
CS8
CS8
4
1
DATA
[7:4]
Discrete Output
3
CSPA1[1]
ADDR20
ADDR20 ADDR19
CS7/
CS7
CS7
ECLK
PC6
PC5
PC4
PC3
2
1
MC68332TS/D
ADDR19
ADDR19
DATA
[7:3]
CS6/
CS6
$YFFA46
1
MC68332
CSPA1[0]
0
1