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  ON Semiconductor Electronic Components Datasheet  

LC877917A Datasheet

8-bit 1-chip Microcontroller

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LC877917A pdf
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


  ON Semiconductor Electronic Components Datasheet  

LC877917A Datasheet

8-bit 1-chip Microcontroller

No Preview Available !

LC877917A pdf
LC877917A
Ports
Input/output ports
Data direction programmable for each bit individually:
Other function
LCD ports (segment output):
LCD ports & General I/O ports
Segment output:
Common output:
Bias terminals for LCD driver
Other functions
Input/output ports:
Oscillator pins:
Reset pin:
Power supply:
21 (P0n, P1n, P30, P70-P73)
8 (P1n)
32 (S00-S31)
4 (COM0-COM3)
5 (V1-V3, CUP1, CUP2)
36 (LPAn, LPBn, LPCn, LPLn, P1n)
4 (CF1, CF2, XT1, XT2)
1 (RES)
5 (VSS1-2, VDD1-2, V2)
1 (VDC)
LCD Controller
(1) Seven display modes are available
(2) Duty 1/3duty, 1/4duty
(3) Bias 1/2bias, 1/3bias
(4) Segment output can be switched to general purpose input/output ports.
(5) LCD frame rate frequency: 16 to 85.3Hz (programmable)
(6) LCD power range
1) 1/3bias V1 : 1.2V to 1.8V
V2 : 2.4V to 3.6V
V3 : 3.6V to 5.4V
Please use the LCD panel for V2 (=VDD)× 1.5[V], when you select 1/3bias.
For example, if the power supply voltage is 3.0V, the LCD panel must be 4.5V.
2) 1/2bias
V1 : 1.2V to 1.8V
V2 : 2.4V to 3.6V
V3 : 2.4V to 3.6V
(connect V2 and V3)
Please use the LCD panel for V2 (=VDD)[V], when you select 1/3bias.
For example, if the power supply voltage is 3.0V, the LCD panel must be 3.0V.
Timers
Timer 0: 16 bit timer / counter with capture register
Mode 0: 2 channel 8-bit timer with programmable 8 bit prescaler and 8 bit capture register
Mode 1: 8 bit timer with 8 bit programmable prescaler and 8 bit capture register + 8 bit
Counter with 8-bit capture register
Mode 2: 16 bit timer with 8 bit programmable prescaler and 16 bit capture register
Mode 3: 16 bit counter with 16 bit capture register
Timer 1: PWM / 16 bit timer/ counter with toggle output function
Mode 0: 2 channel 8 bit timer/ counter (with toggle output)
Mode 1: 2 channel 8 bit PWM
Mode 2: 16 bit timer/ counter (with toggle output) Toggle output from lower 8 bits is also possible.
Mode 3: 16 bit timer (with toggle output) Lower order 8 bits can be used as PWM.
Timer 4: 8-bit timer with 6-bit prescaler
Timer 5: 8-bit timer with 6-bit prescaler
Timer 6: 8-bit timer with 6-bit prescaler (with toggle output)
Timer 7: 8-bit timer with 6-bit prescaler (with toggle output)
Base Timer
(1) The clock signal can be selected from any of the following:
Sub-clock (32.768kHz crystal oscillator / Slow RC oscillation), system clock, and prescaler output from timer 0.
(2) Interrupts of five different time intervals are possible.
No.A1840-2/29


Part Number LC877917A
Description 8-bit 1-chip Microcontroller
Maker ON Semiconductor
Total Page 29 Pages
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