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PDF LC877917A Data sheet ( Hoja de datos )
| Número de pieza | LC877917A | |
| Descripción | 8-bit 1-chip Microcontroller | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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Ordering number : ENA1840
LC877917A
CMOS IC
16K-byte ROM and 512-byte RAM integrated
8-bit 1-chip Microcontroller
http://onsemi.com
Overview
The LC877917A is an 8-bit microcomputer 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 16K-byte ROM, 512-byte RAM, a LCD
controller/driver, sophisticated 16-bit timer/counter (may be divided into 8-bit timers), a 16-bit timer/counter (may be
divided into 8-bit timers/counters or 8-bit PWMs), four 8-bit timers with a prescaler, a calendar function (RTC), a
synchronous SIO interface (with automatic block transmission/reception capabilities), an asynchronous/synchronous
SIO interface, a UART interface (full duplex), a 12-bit/8-bit 7-channel AD converter, high-speed clock counter, a
system clock frequency divider, a power on reset function and a 21-source 10-vector interrupt feature.
Features
ROM
• 16384×8 bits
RAM
• 512 × 9 bits
Minimum Bus Cycle
• 250ns (4MHz) VDD=2.4V to 3.6V
Note: The bus cycle time here refers to the ROM read speed.
Minimum instruction cycle time
• 750ns (4MHz) VDD=2.4 to 3.6V
Temperature range
• -40°C to +85°C
Semiconductor Components Industries, LLC, 2013
May, 2013
Ver.0.97
O0610HKIM 20100914-S00003 No.A1840-1/29
1 page  
LC877917A
Standby Function
• HALT mode
HALT mode is used to reduce power consumption. During the HALT mode, program execution is stopped but
peripheral circuits keep operating (Some parts of serial transfer operation stop.)
(1) Oscillation circuits are not stopped automatically.
(2) Released by the system reset or interrupts.
• HOLD mode
HOLD mode is used to reduce power consumption. Program execution and peripheral circuits are stopped.
(1) CF, RC and crystal oscillation circuits stop automatically.
(2) Released by any of the following conditions.
1) Low level input to the reset pin
2) Watchdog timer interrupt
3) Specified level input to one of INT0, INT1, INT2
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. Program execution is stopped.
All peripheral circuits except the base timer are stopped.
(1) CF and RC oscillation circuits stop automatically.
(2) Crystal oscillator operation is kept in its state at HOLD mode inception.
(3) Released by any of the following conditions.
1) Low level input to the reset pin
2) Watchdog timer interrupt
3) Specified level input to one of INT0, INT1, INT2
4) Port 0 interrupt
5) Base-timer interrupt
6) RTC interrupt
7) SPI interrupt by receiving 1-byte (8-bit clock)
Shipping Form
• QIP64E (14×14) (Lead-/Halogen-free type)
• TQFP64J (7×7) (Lead-/Halogen-free type)
• SQFP64 (10×10) (Lead-/Halogen-free type)
• CHIP
Development Tools
• On-chip debugger: TCB87 TypeB+LC87F7932B
No.A1840-5/29
5 Page 
LC877917A
Continued from preceding page.
Pin name
S00/LPA0 to
S07/LPA7
S08/LPB0 to
S15/LPB7
S16/LPC0 to
S23/LPC7
COM0/LPL0 to
COM3/LPL3
V1 to V3
RES
XT1
XT2
CF1
CF2
I/O Function description
I/O • Segment output for LCD
• Can be used as general purpose input/output port (LPA)
I/O • Segment output for LCD
• Can be used as general purpose input/output port (LPB)
I/O • Segment output for LCD
• Can be used as general purpose input/output port (LPC)
I/O • Common output for LCD
• Can be used as general purpose input/output port (LPL)
I/O • LCD output bias power supply
I • Reset terminal
I/O • Input for 32.768kHz crystal oscillation
• When not in use, connect to VDD1
I/O • Output for 32.768kHz crystal oscillation
• When not in use, set to oscillation mode and leave open
I • Input terminal for ceramic oscillator
• When not in use, connect to VDD1
O • Output terminal for ceramic oscillator
• When not in use, leave open
Port Configuration
Port form and pull-up resistor options are shown in the following table.
Port status can be read even when port is set to output mode.
Terminal
Option applies to:
Options
Output Form
P00 to P07
each bit
1 CMOS
2 Nch-open drain
P10/S24 to P17/S31
each bit
1 CMOS
2 Nch-open drain
P30 - 1 CMOS
2 Nch-open drain
P70
-
None
Nch-open drain
P71 to P73
-
None
CMOS
S00(LPA0) to
S23(LPC7)
-
None
CMOS
P-ch Open Drain
N-ch Open Drain
COM0(LPL0) to
COM3(LPL3)
-
None
CMOS
P-ch Open Drain
N-ch Open Drain
XT1
-
None
Input only
XT2
-
None
32.768kHz crystal oscillator output
Nch-open drain when selected as normal port
Option
No
No
No
No
No
No
No
No
No
No
Pull-up resistor
Programmable
Programmable
Programmable
Programmable
Programmable
Programmable
Programmable
Programmable
None
None
None
None
No.A1840-11/29
11 Page | ||
| Páginas | Total 29 Páginas | |
| PDF Descargar | [ Datasheet LC877917A.PDF ] | |
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