S9S12P64J0CFTR Freescale Semiconductor, S9S12P64J0CFTR Datasheet - Page 206

• Manufacturer Part Number: S9S12P64J0CFTR
• Description: 16-bit Microcontrollers - MCU 16-bit 64K Flash
• Manufacturer: Freescale Semiconductor

Specifications of S9S12P64J0CFTR

• Rohs: yes
• Core: S12
• Processor Series: MC9S12P
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 25 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 4 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3.15 V to 5.5 V
• Operating Temperature Range: - 40 C to + 125 C
• Package / Case: QFN-48
• Mounting Style: SMD/SMT

S12 Clock, Reset and Power Management Unit (S12CPMU)
7.3.2
This section describes all the S12CPMU registers and their individual bits.
Address order is as listed in
7.3.2.1
The CPMUSYNR register controls the multiplication factor of the PLL and selects the VCO frequency
range.
Read: Anytime
Write: If PROT=0 (CPMUPROT register) and PLLSEL=1 (CPMUCLKS register), then write anytime.
Else write has no effect.
The VCOFRQ[1:0] bits are used to configure the VCO gain for optimal stability and lock time. For correct
PLL operation the VCOFRQ[1:0] bits have to be selected according to the actual target VCOCLK
frequency as shown in
PLL (no locking and/or insufficient stability).
206
0x0034
Reset
W
If PLL has locked (LOCK=1)
R
Register Descriptions
S12CPMU Synthesizer Register (CPMUSYNR)
0
7
VCOFRQ[1:0]
Writing to this register clears the LOCK and UPOSC status bits.
f
frequency f
VCO
must be within the specified VCO frequency lock range. Bus
Table
Figure 7-4. S12CPMU Synthesizer Register (CPMUSYNR)
1
6
bus
Figure
7-1. Setting the VCOFRQ[1:0] bits incorrectly can result in a non functional
must not exceed the specified maximum.
Table 7-1. VCO Clock Frequency Selection
VCOCLK Frequency Ranges
32MHz <= f
48MHz < f
S12P-Family Reference Manual, Rev. 1.13
7-3.
0
5
Reserved
Reserved
f VCO
VCO
VCO
<= 64MHz
<= 48MHz
=
NOTE
NOTE
1
4
2 f REF
×
×
(
SYNDIV
1
3
VCOFRQ[1:0]
SYNDIV[5:0]
00
01
10
11
+
1
)
1
2
Freescale Semiconductor
1
1
1
0