ST92F120V1Q7 STMicroelectronics, ST92F120V1Q7 Datasheet - Page 103

• Manufacturer Part Number: ST92F120V1Q7
• Description: Microcontrollers (MCU) Flash 128K SPI/I2C
• Manufacturer: STMicroelectronics

Specifications of ST92F120V1Q7

• Data Bus Width: 8 bit, 16 bit
• Program Memory Type: Flash
• Program Memory Size: 128 KB
• Data Ram Size: 4 KB
• Interface Type: I2C, SPI
• Maximum Clock Frequency: 24 MHz
• Number Of Programmable I/os: 77
• Number Of Timers: 5
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Package / Case: PQFP-100
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 16 Channel
• Lead Free Status / Rohs Status: No

CLOCK CONTROL REGISTERS (Cont’d)
PLL CONFIGURATION REGISTER (PLLCONF)
R246 - Read/Write
Register Page: 55
Reset Value: xx00x111 (xxh)
Bits 5:4 = MX[1:0]: PLL Multiplication Factor .
Refer to
CAUTION: After these bits are modified, take care
that the PLL lock-in time has elapsed before set-
ting the CSU_CKSEL bit in the CLK_FLAG regis-
ter.
Bits 2:0 = DX[2:0]: PLL output clock divider factor.
Refer to
Figure 48. RCCU General Timing
PLL Multiplier
7
-
CLOCK2
RESET
INTCLK
Internal
Internal
Reset
Reset
Clock
-
Table 21
Table 22
MX1 MX0
for multiplier settings.
for divider settings.
20 s
-
< 4 s
DX2
ST92F120 - RESET AND CLOCK CONTROL UNIT (RCCU)
DX1
Boot ROM execution
Reset phase
User program execution
DX0
0
T
RSPH
Exit from RESET
Table 21. PLL Multiplication Factors
Table 22. PLL Divider Factors
DX2
0
0
0
0
1
1
1
1
MX1
1
0
1
0
DX1
PLL Lock-in Time
0
0
1
1
0
0
1
1
MX0
0
0
1
1
DX0
0
1
0
1
0
1
0
1
PLL switched on by user
PLL selected by user
(PLL OFF, Reset State)
PLL CLOCK/1
PLL CLOCK/2
PLL CLOCK/3
PLL CLOCK/4
PLL CLOCK/5
PLL CLOCK/6
PLL CLOCK/7
CLOCK2 x
CLOCK2
CK
14
10
8
6
VR02113B
103/324
9