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PDF EM78M611 Data sheet ( Hoja de datos )
| Número de pieza | EM78M611 | |
| Descripción | Universal Serial Bus Microcontroller Series | |
| Fabricantes | Elan Microelectronics | |
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EM78M611
Universal Serial Bus Microcontroller Series
Preliminary
SPECIFICATION
1. General Description
The EM78M611 is a series of Universal Serial Bus 8-bit RISC Multi-Time Programming
(MTP) microcontrollers. It is specifically designed for USB low speed device application and
to support legacy device such as PS/2 keyboard. The EM78M611 also support one device
address and three endpoints. With no firmware involved, these series of microcontrollers can
automatically identify and decode Standard USB Command to EndPoint Zero.
The EM78M611 is implemented on a RISC architecture. It has eight-level stack and eight
interrupt sources. Each device has 144 bytes of general purpose SRAM and 6K bytes of
program ROM, and is embedded with 4 bytes of E2PROM. The EM78M611 has up to 11
pins with the capacity of sinking large current.
These series of chips have many powerful features, including :
Dual Clock mode which allows the device to run on very low power saving frequency
Pattern Detect Application function which is used in a serial transmission to count
waveform width
Width Modulation that can generate a duty-cycle-programmable signal
24-channel AD converter with up to 10 bits resolution.
2. Features
Operating voltage 4.4V ~ 5.25V
Low-cost solution for low-speed USB devices, such as keyboard, joystick, and
Gamepad.
USB Specification Compliance
Universal Serial Bus Specification Version 1.1
USB Device Class Definition for Human Interface Device (HID), Firmware
Specification Version 1.1
Support 1 device address and 3 endpoints
USB Application
P75(D-) has an internal pull-high resistor (1.5K Ohm)
USB protocol handling
USB device state handling
Identifying and decoding of Standard USB commands to EndPoint Zero
This spec. may change without further notice.
1
06/ 18/ 2003(V1.0)
1 page  
5. Pin Configuration
EM78M611
Universal Serial Bus Microcontroller Series
Preliminary
EM78M611AP (40-Pin DIP)
VSS 1
V3.3 2
D+ / CLK / P74 3
D- / DATA / P75 4
P90 5
P91 6
P92 / PWM1 / SE1 7
P93 / PWM2 / SE2 8
P94/Vpp 9
VNN 10
P50 / AD0 11
P51 / AD1 12
P52 / AD2 13
P53 / AD3 14
P54 / AD4 15
P55 / AD5 16
P56 / AD6 17
P57 / AD7 18
P80 / AD8 19
P81 / AD9 20
40 OSCO
39 OSCI
38 VDD
37 P70
36 P71
35 P72
34 P67 / AD23
33 P66 / AD22
32 P65 / AD21
31 P64 / AD20
30 P63 / AD19
29 P62 / AD18
28 P61 / AD17
27 P60 / AD16
26 P87 / AD15
25 P86 / AD14
24 P85 / AD13
23 P84 / AD12
22 P83 / AD11
21 P82 / AD10
EM78M611AQ (44-Pin QFP)
P91 1
P92 / PWM1 / SE1 2
P93 / PWM2 / SE2 3
P94/Vpp 4
P95 5
P96 6
VNN 7
P50 / AD0 8
P51 / AD1 9
P52 / AD2 10
P53 / AD3 11
33 P71
32 P72
31 P67 / AD23
30 P66 / AD22
29 P65 / AD21
28 P64 / AD20
27 P63 / AD19
26 P62 / AD18
25 P61 / AD17
24 P60 / AD16
23 P87 / AD15
This spec. may change without further notice.
5
06/ 18/ 2003(V1.0)
5 Page 
EM78M611
Universal Serial Bus Microcontroller Series
Preliminary
16x8 Common
Register
Fig 8.1 The Organization of EM78M611 Data RAM
8.2.1.1 Operation Registers
The following sections will introduce each of the Operation Registers of the Special Purpose
Registers. The Operation Registers are arranged according to the order of registers’ address.
Note that some registers are read only, while others are both readable and writable.
R0 (Indirect Addressing Register) Default Value: (0B_0000_0000)
R0 is not a physically implemented register. Its major function is to be an indirect addressing
pointer. Any instruction using R0 as a pointer actually accesses the data pointed by the RAM
Select Register (R4).
This spec. may change without further notice.
11
06/ 18/ 2003(V1.0)
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet EM78M611.PDF ] | |
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