General Description; Features - IBM EM78P221/2N Specification

EM78P221/2N
8-Bit Microcontroller with OTP ROM
1

General Description

EM78P221N and EM78P222N are 8-bit microprocessors designed and developed with low-power and high-speed CMOS
technology. Each device in the series has as an on-chip 4K×13-bit Electrical One Time Programmable Read Only Memory
(OTP-ROM). Each provides a protection bit to prevent intrusion of user's OTP memory code. Two Code option bits are
also available to meet user's requirements.
With its enhanced OTP-ROM features, each device provides a convenient way of developing and verifying user's
programs. Moreover, this OTP devices offer the advantages of easy and effective program updates, using development
and programming tools. User can avail of the ELAN Writer to easily program his development code.
2

Features

CPU configuration
•
4K×13 bits on-chip OTP-ROM
•
144×8 bits on-chip registers (SRAM)
•
8-level stacks for subroutine nesting
•
3 programmable Level Voltage Reset
(LVR) : 4.0V, 3.0V, 2.5V
•
Less than 1.5 mA at 5V/4MHz
• Typically 15 μA, at 3V/32kHz
• Typically 2 μA, during sleep mode
I/O port configuration
•
4 bidirectional I/O ports: P5, P6, P7 and P8
•
Wake-up port : P6
•
26 I/O pins
•
8 programmable pull-down I/O pins
•
8 programmable pull-high I/O pins
•
8 programmable open-drain I/O pins
•
16 Programmable high sink current I/O pins
•
8 Programmable high drive current I/O pins
•
External interrupt : P77, P71
Operating voltage range:
•
OTP version:
Operating voltage range: 2.1V~5.5V (commercial)
Operating voltage range: 2.3V~5.5V (industrial)
Operating temperature range:
Operating temperature range: 0°C~70°C
(commercial)
Operating temperature range: -40°C~85°C
(industrial)
Operating frequency range
•
Crystal mode:
DC~16MHz/2 clks @ 4.5V; DC~125ns inst. cycle
@ 4.5V
DC ~ 8MHz/2 clks @ 3V; DC~250ns inst. Cycle
@ 3V
•
ERC mode:
DC ~ 16MHz/2 clks @ 4.5V; DC~125ns inst.
cycle @ 5V
DC ~ 8MHz/2 clks @ 3V; DC ~ 250ns inst. Cycle
@ 3V
•
IRC mode:
Oscillation mode: 16MHz, 4 MHz, 1 MHz, 455kHz
Process deviation: Typ ± 3%, Max. ± 5%
Temperature deviation: ± 5% (-40°C~85°C)
2 •
Internal RC
Frequency Temperature
°C °C
(-40 +85
4MHz ±5%
16MHz ±5%
1MHz ±5%
455kHz ±5%
All these four main frequencies can be trimmed by
programming with four calibrated bits in the ICE220N
Simulator. OTP is auto trimmed by ELAN Writer
(DWTR).
Fast set-up time requires only 800μs (VDD:5V,
Crystal: 4MHz, C1/C2: 30pF) in HXT2 mode and 10μs in
IRC mode (VDD:5V IRC:4MHz)
Peripheral configuration
•
8-bit real time clock/counter (TCC) with selective
signal sources, trigger edges, and overflow interrupt
•
One comparator (can act as an OP).
(offset voltage is smaller than 10mV)
Five available interrupts
•
TCC overflow interrupt
•
Input-port status changed interrupt (wake up from
sleep mode)
•
Two External interrupts
•
Comparator high/low interrupt
Special Features
•
Programmable free running Watchdog Timer
•
Two clocks per instruction cycle
•
Power-on voltage detector available (1.8 V± 0.1V)
•
High EFT immunity (better performance at 4MHz or
below
•
Power saving Sleep mode
•
Selectable Oscillation mode
•
Package Type:
•
24-pin skinny DIP 300mil : EM78P221NKJ/NKS
•
24 pin SOP 300mil
•
24 pin SSOP 209mil
•
28-pin skinny DIP 300mil : EM78P222NKJ/NKS
•
28 pin SOP 300mil
•
28 pin SSOP 209mil
Product Specification (V1.0) 10.19.2007
(This specification is subject to change without further notice)
Drift Rate
Voltage
Process Total
) (2.1V~5.5V)
±5% ±4% ±14%
±5% ±4% ±14%
±5% ±4% ±14%
±5% ±4% ±14%
: EM78P221NMJ/NMS
: EM78P221NAMJ/NAMS
: EM78P222NMJ/NMS
: EM78P222NAMJ/NAMS