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ST72141K2 数据表(PDF) 5 Page - STMicroelectronics |
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ST72141K2 数据表(HTML) 5 Page - STMicroelectronics |
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5 / 132 page  ST72141K 5/132 1 GENERAL DESCRIPTION 1.1 INTRODUCTION The ST72141K devices are members of the ST7 microcontroller family designed specifically for mo- tor control applications and including A/D conver- sion and SPI interface capabilities. They include an on-chip Moter Controller peripheral for control of electric brushless moters with or without sen- sors. An example application, for 6-step control of a Permanent Magnet DC motor, is shown in Figure 1. The ST72141K devices are based on a common industry-standard 8-bit core, featuring an en- hanced instruction set. Under software control, they can be placed in WAIT, SLOW, or HALT mode, reducing power consumption when the application is in idle or standby state. The enhanced instruction set and addressing modes of the ST7 offer both power and flexibility to software developers, enabling the design of highly efficient and compact application code. In addition to standard 8-bit data management, all ST7 micro- controllers feature true bit manipulation, 8x8 un- signed multiplication and indirect addressing modes. Figure 1. Example of a 6-step-controlled Motor Figure 2. Device Block Diagram 0 1 2 3 4 5 A B C Net Step Σ 1 Σ 2 Σ 3 Σ 4 Σ 5 Σ 6 Σ 1 Σ 2 Σ 3 C A B 300V 4 1 I4 I1 I3 I6 I2 I5 300V 150V 0 300V 150V 0 300V 150V 0 ST7 MTC MCO5-0 MCIB MCIA MCIC 2 0 3 5 6 8-BIT CORE ALU OSC1 OSC2 RESET MOTOR CTRL TIMER B TIMER A PORT B WATCHDOG MCO5:0 OSC Internal CLOCK CONTROL 256b-RAM PA7:0 VSS VDD POWER SUPPLY 8K-EPROM PORT A 8-BIT ADC SPI OC1A MCIA:C MCES MCCFI PB5:0 DIV LVD (6-BIT) (8-BIT) 4 |
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