MC68331CEH25 Freescale Semiconductor, MC68331CEH25 Datasheet - Page 30

• Manufacturer Part Number: MC68331CEH25
• Description: IC MCU 32BIT 25MHZ 132-PQFP
• Manufacturer: Freescale Semiconductor
• Series: M683xxr

Specifications of MC68331CEH25

• Core Processor: CPU32
• Core Size: 32-Bit
• Speed: 25MHz
• Connectivity: EBI/EMI, SCI, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Type: ROMless
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 132-QFP
• Controller Family/series: 68K
• No. Of I/o's: 18
• Cpu Speed: 25MHz
• No. Of Timers: 1
• Embedded Interface Type: QSPI, SCI, UART
• No. Of Pwm Channels: 2
• Digital Ic Case Style: PQFP
• Rohs Compliant: Yes
• Processor Series: M683xx
• Core: CPU32
• Data Bus Width: 32 bit
• Data Ram Size: 80 B
• Interface Type: QSPI, SCI, UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 18
• Number Of Timers: 1
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Eeprom Size: -
• Ram Size: -
• Program Memory Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

3.5.2 Pin Assignment Registers
CSPAR0 —Chip Select Pin Assignment Register 0
CSPAR1 —Chip Select Pin Assignment Register 1
30
RESET:
RESET:
15
15
0
0
0
0
The pin assignment registers (CSPAR0 and CSPAR1) contain pairs of bits that determine the function
of chip-select pins. The pin assignment encodings used in these registers are shown below.
CSPAR0 contains seven 2-bit fields that determine the functions of corresponding chip-select pins.
CSPAR0[15:14] are not used. These bits always read zero; writes have no effect. CSPAR0 bit 1 always
reads one; writes to CSPAR0 bit 1 have no effect.
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.
CSPAR0 Field
CSPAR0 Field
14
14
0
0
0
0
CSPA0[6]
CSPA0[5]
CSPA0[4]
CSPA0[3]
CSPA0[2]
CSPA0[1]
CSPA1[4]
CSPA1[3]
CSPA1[2]
CSPA1[1]
CSPA1[0]
CSBOOT
DATA2
13
13
0
0
CSPA0[6]
12
12
1
0
0
Freescale Semiconductor, Inc.
DATA2
11
11
For More Information On This Product,
0
0
CSPA0[5]
Chip Select Signal
Chip Select Signal
Bit Field
Table 12 Pin Assignment Encodings
Table 13 CSPAR0 Pin Assignments
Table 14 CSPAR1 Pin Assignments
00
01
10
11
CSBOOT
10
10
1
0
0
CS10
CS5
CS4
CS3
CS2
CS1
CS0
CS9
CS8
CS7
CS6
Go to: www.freescale.com
DATA2
DATA7
9
9
CSPA0[4]
CSPA1[4]
Chip Select (16-Bit Port)
8
1
8
1
Chip Select (8-Bit Port)
Alternate Function
Discrete Output
DATA1
DATA
Description
[7:6]
7
7
CSPA0[3]
CSPA1[3]
Alternate Signal
Alternate Signal
ADDR23
ADDR22
ADDR21
ADDR20
ADDR19
BGACK
6
1
6
1
FC2
FC1
FC0
BG
BR
—
DATA1
DATA
[7:5]
5
5
CSPA0[2]
CSPA1[2]
4
1
4
1
DATA1
DATA
[7:4]
Discrete Output
Discrete Output
3
3
CSPA0[1]
CSPA1[1]
ECLK
PC2
PC1
PC0
PC6
PC5
PC4
PC3
—
—
—
—
2
1
2
1
MC68331TS/D
DATA
[7:3]
$YFFA44
1
1
$YFFA46
1
CSPA1[0]
CSBOOT
DATA0
0
0
1