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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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HC705JJ7GRS/D 数据表(PDF) 96 Page - NXP Semiconductors |
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HC705JJ7GRS/D 数据表(HTML) 96 Page - NXP Semiconductors |
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96 / 230 page  Parallel Input/Output General Release Specification MC68HC705JJ7/MC68HC705JP7 — Rev. 3.0 Parallel Input/Output 7.4.9 PB7/SCK Logic The PB7/SCK pin can be used as a simple I/O port pin or be controlled by the SIOP serial interface as shown in Figure 7-12. The operations of the PB7/SCK pin are summarized in Table 7-3. Figure 7-12. PB7/SCK Pin I/O Circuit DATA DIRECTION REGISTER B BIT DDRB7 PORT B DATA REGISTER BIT PB7 PULLDOWN REGISTER B BIT PDIB7 R R PB7 READ $0005 WRITE $0001 READ $0001 WRITE $0011 PULLDOWN DEVICE RESET WRITE $0005 SCK SERIAL ENABLE (SPE) CLOCK SOURCE (MSTR) SERIAL DATA CLOCK (SCK) MASK OPTION REGISTER ($1FF1) Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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