PIC17C75X Datasheet, PDF (313/320 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM Microcontrollers

Figure 10-1: RA0 and RA1 Block Diagram ..................... 65
Figure 10-2: RA2 Block Diagram .................................... 66
Figure 10-3: RA3 Block Diagram .................................... 66
Figure 10-4: RA4 and RA5 Block Diagram ..................... 66
Figure 10-5: Block Diagram of RB5:RB4 and RB1:RB0
Port Pins ..................................................... 68
Figure 10-6: Block Diagram of RB3:RB2 Port Pins......... 69
Figure 10-7: Block Diagram of RB6 Port Pin................... 70
Figure 10-8: Block Diagram of RB7 Port Pin................... 70
Figure 10-9: Block Diagram of RC7:RC0 Port Pins ........ 72
Figure 10-10: Block Diagram of RD7:RD0 Port Pins
(in I/O Port Mode) ....................................... 74
Figure 10-11: Block Diagram of RE2:RE0 (in I/O Port
Mode).......................................................... 76
Figure 10-12: Block Diagram of RE3/CAP4 Port Pin ........ 77
Figure 10-13: Block Diagram of RF7:RF0......................... 78
Figure 10-14: Block Diagram of RG3:RG0........................ 80
Figure 10-15: RG4 Block Diagram .................................... 81
Figure 10-16: RG7:RG5 Block Diagram............................ 81
Figure 10-17: Successive I/O Operation ........................... 83
Figure 12-1: T0STA Register (Address: 05h,
Unbanked) .................................................. 87
Figure 12-2: Timer0 Module Block Diagram ................... 88
Figure 12-3: TMR0 Timing with External Clock
(Increment on Falling Edge) ....................... 88
Figure 12-4: TMR0 Timing: Write High or Low Byte ....... 89
Figure 12-5: TMR0 Read/Write in Timer Mode ............... 90
Figure 13-1: TCON1 Register (Address: 16h, Bank 3) ... 91
Figure 13-2: TCON2 Register (Address: 17h, Bank 3) ... 92
Figure 13-3: TCON3 Register (Address: 16h, Bank 7) ... 93
Figure 13-4: Timer1 and Timer2 in Two 8-bit Timer/
Counter Mode ............................................. 94
Figure 13-5: TMR2 and TMR1 in 16-bit Timer/Counter
Mode........................................................... 95
Figure 13-6: Simplified PWM Block Diagram .................. 97
Figure 13-7: PWM Output ............................................... 97
Figure 13-8: Timer3 with three Capture and One
Period Register Block Diagram................. 100
Figure 13-9: Timer3 with Four Captures Block
Diagram .................................................... 102
Figure 13-10: Timer1, Timer2, and Timer3 Operation
(in Counter Mode)..................................... 104
Figure 13-11: Timer1, Timer2, and Timer3 Operation
(in Timer Mode) ........................................ 105
Figure 14-1: TXSTA1 Register (Address: 15h, Bank 0)
TXSTA2 Register (Address: 15h, Bank 4) 107
Figure 14-2: RCSTA1 Register (Address: 13h, Bank 0)
RCSTA2 Register (Address: 13h, Bank 4) 108
Figure 14-3: USART Transmit....................................... 109
Figure 14-4: USART Receive........................................ 109
Figure 14-5: Asynchronous Master Transmission......... 114
Figure 14-6: Asynchronous Master Transmission
(Back to Back) .......................................... 114
Figure 14-7: RX Pin Sampling Scheme ........................ 115
Figure 14-8: Asynchronous Reception.......................... 116
Figure 14-9: Synchronous Transmission ...................... 118
Figure 14-10: Synchronous Transmission
(Through TXEN) ....................................... 118
Figure 14-11: Synchronous Reception (Master Mode,
SREN)....................................................... 119
Figure 15-1:
Figure 15-2:
Figure 15-3:
SPI Mode Block Diagram.......................... 123
I²C Slave Mode Block Diagram ................ 123
I²C Master Mode Block Diagram .............. 123
Figure 15-4: SSPSTAT: Sync Serial Port Status
Register (Address: 13h, BANK 6) ............. 124
PIC17C75X
Figure 15-5: SSPCON1: Sync Serial Port Control
Register1 (Address 11h, BANK 6)............ 125
Figure 15-6: SSPCON2: Sync Serial Port Control
Register2 (Address 12h, BANK 6)........... 126
Figure 15-7: SSP Block Diagram (SPI Mode)............... 128
Figure 15-8: SPI Mode Timing (Master Mode) ............. 129
Figure 15-9: SPI Master/Slave Connection .................. 130
Figure 15-10: Slave Synchronization Timing .................. 131
Figure 15-11: SPI Mode Timing (Slave Mode with
CKE = 0)................................................... 132
Figure 15-12: SPI Mode Timing (Slave Mode with
CKE = 1)................................................... 133
Figure 15-13: SSP Block Diagram
(I²C Mode)................................................ 134
Figure 15-14: I²C Master Mode Block Diagram.............. 134
Figure 15-15: I²C Waveforms for Reception
(7-bit Address).......................................... 136
Figure 15-16: I²C Waveforms for Transmission
(7-bit Address).......................................... 136
Figure 15-17: I2C Slave-Transmitter (10-bit Address).... 137
Figure 15-18: I2C Slave-Receiver (10-bit Address)........ 138
Figure 15-19: General Call Address Sequence
(7 or 10-bit Mode)..................................... 139
Figure 15-20: SSP Block Diagram (I²C Master Mode) ... 141
Figure 15-21: Baud Rate Generator Block Diagram....... 143
Figure 15-22: Baud Rate Generator Timing With
Clock Arbitration ....................................... 143
Figure 15-23: First Start Bit Timing................................. 144
Figure 15-24: Start Condition FlowChart ........................ 145
Figure 15-25: Repeat Start Condition Timing ................. 146
Figure 15-26: Restart Condition FlowChart (page 1)...... 147
Figure 15-27: Restart Condition FlowChart (page 2)...... 148
Figure 15-28: Master Transmit FlowChart ...................... 150
Figure 15-29: I²C Master Mode Timing (Transmission,
7 or 10-bit Address).................................. 151
Figure 15-30: Master Receiver FlowChart...................... 153
Figure 15-31: I²C Master Mode Timing (Reception
7-Bit Address)........................................... 154
Figure 15-32: Acknowledge Sequence Timing ............... 155
Figure 15-33: Acknowledge FlowChart........................... 156
Figure 15-34: Stop Condition Receive or Transmit
Mode ........................................................ 157
Figure 15-35: Stop Condition FlowChart ........................ 158
Figure 15-36: Clock Arbitration Timing in Master
Transmit Mode ......................................... 159
Figure 15-37: Bus Collision Timing for Transmit and
Acknowledge ............................................ 160
Figure 15-38: Bus Collision During Start Condition
(SDA only) ................................................ 161
Figure 15-39: Bus Collision During Start Condition
(SCL = 0) .................................................. 162
Figure 15-40: BRG Reset Due to SDA Collision During
Start Condition.......................................... 162
Figure 15-41: Bus Collision During a Restart Condition
(Case 1).................................................... 163
Figure 15-42: Bus Collision During Restart Condition
(Case 2).................................................... 163
Figure 15-43: Bus Collision During a Stop Condition
(Case 1).................................................... 164
Figure 15-44: Bus Collision During a Stop Condition
(Case 2).................................................... 164
Figure 15-45: Sample device configuration for I²C bus .. 165
Figure 16-1: ADCON0 Register (Address: 14h,
Bank 5) ..................................................... 167
Figure 16-2: ADCON1 Register (Address 15h,
Bank 5) ..................................................... 168
© 1997 Microchip Technology Inc.
Preliminary
DS30264A-page 313