MC68332ACPV25 Freescale Semiconductor, MC68332ACPV25 Datasheet - Page 59

• 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

TCR1P — Timer Count Register 1 Prescaler Control
TCR2P — Timer Count Register 2 Prescaler Control
MC68332
MC68332TS/D
EXTERNAL
TCR2 PIN
SYSTEM
TCR1 is clocked from the output of a prescaler. The prescaler's input is the internal TPU system clock
divided by either 4 or 32, depending on the value of the PSCK bit. The prescaler divides this input by 1,
2, 4, or 8. Channels using TCR1 have the capability to resolve down to the TPU system clock divided
by 4.
TCR2 is clocked from the output of a prescaler. If T2CG = 0, the input to the TCR2 prescaler is the ex-
ternal TCR2 clock source. If T2CG = 1, the input is the TPU system clock divided by eight. The TCR2P
field specifies the value of the prescaler: 1, 2, 4, or 8. Channels using TCR2 have the capability to re-
solve down to the TPU system clock divided by 8. The following table is a summary of prescaler output.
CLOCK
TCR1 Prescaler
TCR2 Prescaler
00
01
10
11
SYNCHRONIZER
00
01
10
11
INT CLK /8
32
4
Freescale Semiconductor, Inc.
Divide
For More Information On This Product,
DIV32 CLOCK
DIV4 CLOCK
By
DIGITAL
FILTER
1
2
4
8
Divide By
Go to: www.freescale.com
1
2
4
8
Number of
Clocks
0 – DIV32
1 – DIV4
128
256
PSCK
MUX
32
64
PSCK = 0
A
B
Internal Clock Divided
(T2CG CONTROL BIT)
CONTROL
MUX
0 – A
1 – B
Rate at
16 MHz
16 ms
2 ms
4 ms
8 ms
By
16
32
64
8
PRESCALER
00 1
01 2
10 4
11 8
TCR1
PRESCALER
TCR2
00 1
01 2
10 4
11 8
Number of
Clocks
External Clock Divided
16
32
4
8
0
0
PSCK = 1
TCR1
By
1
2
4
8
PRESCALER CTL BLOCK 1
TCR2
MOTOROLA
PRESCALER CTL BLOCK 2
16 MHz
Rate at
250 ns
500 ns
1 ms
2 ms
15
15
59