ST92F150JDV1 STMicroelectronics, ST92F150JDV1 Datasheet - Page 128
ST92F150JDV1
Manufacturer Part Number
ST92F150JDV1
Description
8-bit MCU
Manufacturer
STMicroelectronics
Datasheet
1.ST92F150CR1.pdf
(429 pages)
Specifications of ST92F150JDV1
Internal Memory
Single Voltage FLASH up to 256 Kbytes, RAM up to 8Kbytes, 1K byte E3 (Emulated EEPROM)
Minimum Instruction Time
83 ns (24 MHz int. clock)
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ST92F124/F150/F250 - RESET AND CLOCK CONTROL UNIT (RCCU)
7.3 CLOCK MANAGEMENT
The various programmable features and operating modes of the CCU are handled by four registers:
– MODER (Mode Register)
– CLKCTL (Clock Control Register)
Figure 61. Clock Control Unit Programming
128/429
9
This is a System Register (R235, Group E).
The input clock divide-by-two and the CPU clock
prescaler factors are handled by this register.
This is a Paged Register (R240, Page 55).
The low power modes, the RCCU interrupts and
the interpretation of the HALT instruction are
handled by this register.
(CLK_FLAG)
XTSTOP
oscillator
Crystal
CK_AF
source
Wait for Interrupt and Low Power Modes:
LPOWFI (CLKCTL) selects Low Power operation automatically on entering WFI mode.
WFI_CKSEL (CLKCTL) selects the CK_AF clock automatically, if present, on entering WFI mode.
XTSTOP (CLK_FLAG) automatically stops the crystal oscillator when the CK_AF clock is present and selected.
CLOCK1
CK_AF
1/2
(MODER)
DIV2
0
1
CLOCK2
6/8/10/14
MX[1:0]
PLL
x
(PLLCONF)
1/16
DX[2:0]
1/N
– CLK_FLAG (Clock Flag Register)
– PLLCONF (PLL Configuration Register)
This is a Paged Register (R242, Page 55).
This register contains various status flags, as
well as control bits for clock selection.
This is a Paged Register (R246, Page 55).
PLL management is programmed in this register.
CSU_CKSEL
(CLK_FLAG)
0
1
XT_DIV16
0
1
(CLK_FLAG)
1/4
CKAF_SEL
(CLKCTL)
CKAF_ST
0
1
CPU Clock Prescaler
Peripherals
INTCLK
CK_128
and
to
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