ST72321J7 STMicroelectronics, ST72321J7 Datasheet - Page 6
ST72321J7
Manufacturer Part Number
ST72321J7
Description
8-BIT MCU WITH NESTED INTERRUPTS, FLASH,10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE
Manufacturer
STMicroelectronics
Datasheet
1.ST72321J7.pdf
(193 pages)
Specifications of ST72321J7
Hdflash Endurance
100 cycles, data retention
Clock Sources
crystal/ceramic resonator oscillators, internal RC oscillator, clock security system and bypass for external clock
Four Power Saving Modes
Halt, Active-Halt,Wait and Slow
Main Clock Controller With
Real time base, Beep and Clock-out capabilities
Two 16-bit Timers With
2 input captures, 2 output compares, external clock input on one timer, PWM and pulse generator modes
8-bit Pwm Auto-reload Timer With
2 input captures, 4 PWM outputs, output compare and time base interrupt, external clock with event detector
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15 KNOWN LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
16 REVISION HISTORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
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14.1 FLASH OPTION BYTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
14.2 DEVICE ORDERING INFORMATION AND TRANSFER OF CUSTOMER CODE . . . . . 177
14.3 DEVELOPMENT TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
14.4 ST7 APPLICATION NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
15.1 ALL FLASH AND ROM DEVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
15.2 ALL FLASH DEVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
15.3 LIMITATIONS SPECIFIC TO REV Q AND REV S FLASH DEVICES . . . . . . . . . . . . . . . 189
15.4 LIMITATIONS SPECIFIC TO ROM DEVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
14.3.1 Starter kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
14.3.2 Development and debugging tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
14.3.3 Programming tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
14.3.4 Socket and Emulator Adapter Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
15.1.1 External RC option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
15.1.2 Safe Connection of OSC1/OSC2 Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
15.1.3 Reset pin protection with LVD Enabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
15.1.4 Unexpected Reset Fetch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
15.1.5 External interrupt missed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
15.1.6 Clearing active interrupts outside interrupt routine . . . . . . . . . . . . . . . . . . . . . . . 187
15.1.7 SCI Wrong Break duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
15.1.8 16-bit Timer PWM Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
15.1.9 TIMD set simultaneously with OC interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
15.1.10 I2C Multimaster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
15.2.1 Internal RC Oscillator with LVD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
15.3.1 ADC Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
15.4.1 LVD Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
15.4.2 LVD Startup behaviour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
15.4.3 AVD not supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
15.4.4 Internal RC oscillator operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
15.4.5 External clock source with PLL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
15.4.6 Pull-up not present on PE2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
15.4.7 Read-out protection with LVD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
15.4.8 Safe Connection of OSC1/OSC2 Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Table of Contents
193
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