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PDF LC87F7932B Data sheet ( Hoja de datos )
| Número de pieza | LC87F7932B | |
| Descripción | 8-bit 1-chip Microcontroller | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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OOrrddeerriinngg nnuummbbeerr:: EENNAA11884411AA
LC87F7932B
CMOS IC
32K-byte FROM and 2048-byte RAM integrated
8-bit 1-chip Microcontroller
http://onsemi.com
Overview
The LC87F7932B is an 8-bit microcontroller that, centered around a CPU running at a minimum bus cycle time of
250ns, integrates on a single chip a number of hardware features such as 32K-byte flash ROM (onboard
programmable), 2048-byte RAM, an on-chip debugger, an LCD controller/driver, two sophisticated 16-bit
timers/counters (may be divided into 8-bit timers), two 16-bit timers/counters (may be divided into 8-bit
timers/counters or 8-bit PWMs), four 8-bit timers with a prescaler, a real time clock function (RTC), a base timer
serving as a time-of-day clock, a synchronous SIO interface with automatic transfer function, an
asynchronous/synchronous SIO interface, a UART interface (full duplex), a 7-channel AD converter with a 12-/8-bit
resolution selector, a high-speed clock counter, a system clock frequency divider, an internal reset circuit, and a 21-
source 10-vector interrupt function.
Features
Flash ROM
• Capable of on-board programming with a wide supply voltage range of 3.0V to 5.5V
• 128-byte block erase
• 32768 × 8 bits
RAM
• 2048 × 9 bits
Minimum Bus Cycle Time
• 250ns (4MHz) VDD=2.4V to 3.6V
Note: The bus cycle time here refers to the ROM read speed.
Minimum Instruction Cycle Time (tCYC)
• 750ns (4MHz) VDD=2.4V to 3.6V
* This product is licensed from Silicon Storage Technology, Inc. (USA).
Semiconductor Components Industries, LLC, 2013
May, 2013
Ver.1.04
41812HKIM 20120328-S00004 No.A1841-1/30
1 page  
LC87F7932B
Standby Function
• HALT mode: HALT mode is used to reduce power consumption.
Halts instruction execution while allowing the peripheral circuits to continue operation.
(Some serial transfer functions are suspended.)
(1) Oscillators do not stop automatically.
(2) Released by a system reset or occurrence of an interrupt
• HOLD mode: HOLD mode is used to reduce power consumption.
Suspends instruction execution and operation of the peripheral circuits.
(1) CF oscillator, RC oscillators, crystal oscillator, and VMRC oscillator stop automatically.
(2) There are five ways of releasing HOLD mode.
1) Low level input to the reset pin
2) Watchdog timer interrupt
3) Specified level input to at least one of INT0, INT1, and INT2 pins
4) Port 0 interrupt
5) SPI interrupt by receiving 1-byte (8-bit clock)
• X’tal HOLD mode: X’tal HOLD mode is used to reduce power consumption.
Suspends instruction execution and the operation of the peripheral circuits except the base timer.
(1) CF oscillator, RC oscillators, and VMRC oscillator stop automatically.
(2) The state of the crystal oscillator when X’tal HOLD mode is entered is retained.
(3) There are seven ways of releasing X’tal HOLD mode.
1) Low level input to the reset pin
2) Watchdog timer interrupt
3) Specified level input to at least one of INT0, INT1, and INT2 pins
4) Port 0 interrupt
5) Base-timer interrupt
6) RTC interrupt
7) SPI interrupt by receiving 1-byte (8-bit clock)
On-chip Debugger
• Supports software debugging with the IC mounted on the target board.
Package Form
• QIP64E (14×14) (Lead-and-halogen-free product)
• TQFP64J (7×7) (Lead-and-halogen-free product)
• SQFP64 (10×10) (Lead-and-halogen-free product)
Development Tools
• On-chip debugger: TCB87 TypeB+LC87F7932B
Flash ROM Programming Boards
Package
Programming Boards
QIP64E (14×14)
W87F70256Q
TQFP64J (7×7)
W87F70256TQ7
SQFP64 (10×10)
W87F79256SQ
No.A1841-5/30
5 Page 
LC87F7932B
Pin Description
Pin Name
I/O
VSS1, VSS2
VDD1, VDD2, V2
VDC
-
-
-
CUP1, CUP2
-
Port 0
P00 to P07
I/O
Port 1
P10/S24 to
P17/S31
I/O
Port 3
P30
Port 7
P70 to P73
I/O
I/O
Description
• Power supply (-)
• Power supply (+)
• Internal power supply
• Capacitor connecting pins for step-up/step-down circuits
• 8-bit I/O port
• I/O can be specified in 1-bit units.
• Pull-up resistors can be turned on and off in 1-bit units.
• HOLD release input
• Port 0 interrupt input
• Multiplexed functions
P00: UART1 transmit data output
P01: UART1 receive data input
P04: System clock output
P05: DBGP0 (LC87F7932B)
P06: Timer 6 toggle output/DBGP1 (LC87F7932B)
P07: Timer 7 toggle output/DBGP2 (LC87F7932B)
AD converter input ports: AN0 (P00) to AN4 (P04)
• 8-bit I/O port
• I/O can be specified in 1-bit units.
• Pull-up resistors can be turned on and off in 1-bit units.
• Multiplexed functions
P10: SIO0 data output
P11: SIO0 data input or bus I/O
P12: SIO0 clock I/O
P13: SIO1 data output
P14: SIO1 data input or bus I/O
P15: SIO1 clock I/O
P16: Timer 1 PWML output
P17: Timer 1 PWMH output/buzzer output
Segment output for LCD: S24 (P10) to S31 (S17)
•1-bit I/O port
• I/O can be specified in 1-bit units.
• Pull-up resistors can be turned on and off in 1-bit units.
• 4-bit I/O port
• I/O can be specified in 1-bit units.
• Pull-up resistors can be turned on and off in 1-bit units.
• Multiplexed functions
P70: INT0 input/HOLD release input/timer 0L capture input/output for watchdog timer
P71: INT1 input/HOLD release input/timer 0H capture input
P72: INT2 input/HOLD release input/timer 0 event input/timer 0L capture input/high-speed clock
counter input
P73: INT3 input (with noise filter)/timer 0 event input/timer 0H capture input
AD converter input ports: AN5 (P70), AN6 (P71)
Interrupt acknowledge type
Rising
Falling
Rising and falling
H level
L level
INT0
INT1
INT2
INT3
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Option
No
No
No
No
Yes
Yes
Yes
No
Continued on next page.
No.A1841-11/30
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LC87F7932B.PDF ] | |
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