ST10F276 データシートの表示（PDF） - STMicroelectronics

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ST10F276

16-bit MCU with MAC unit, 832 Kbyte Flash memory and 68 Kbyte RAM

STMicroelectronics 

Introduction

ST10F276

restrictions and functional differences due to the XBUS peculiarities are present

between the classic PWM, and the new XPWM.

● An I2C interface on the XBUS is added (see X-I2C or simply I2C interface).

● CLKOUT function can output either the CPU clock (like in ST10F269) or a software

programmable prescaled value of the CPU clock.

● Embedded memory size has been significantly increased (both Flash and RAM).

● PLL multiplication factors have been adapted to new frequency range.

● A/D Converter is not fully compatible versus ST10F269 (timing and programming

model). Formula for the convertion time is still valid, while the sampling phase

programming model is different.

Besides, additional 8 channels are available on P1L pins as alternate function: the

accuracy reachable with these extra channels is reduced with respect to the standard

Port5 channels.

● External Memory bus potential limitations on maximum speed and maximum

capacitance load could be introduced (under evaluation): ST10F276 will probably not

be able to address an external memory at 64MHz with 0 wait states (under evaluation).

● XPERCON register bit mapping modified according to new peripherals implementation

(not fully compatible with ST10F269).

● Bondout chip for emulation (ST10R201) cannot achieve more than 50MHz at room

temperature (so no real time emulation possible at maximum speed).

● Input section characteristics are different. The threshold programmability is extended to

all port pins (additional XPICON register); it is possible to select standard TTL (with up

to 500mV of hysteresis) and standard CMOS (with up to 800mV of hysteresis).

● Output transition is not programmable.

● CAN module is enhanced: ST10F276 implements two C-CAN modules, so the

programming model is slightly different. Besides, the possibility to map in parallel the

two CAN modules is added (on P4.5/P4.6).

● On-chip main oscillator input frequency range has been reshaped, reducing it from 1-

25MHz down to 4-12MHz. This is a high performance oscillator amplifier, providing a

very high negative resistance and wide oscillation amplitude: when this on-chip

amplifier is used as reference for Real Time Clock module, the Power-down

consumption is dominated by the consumption of the oscillator amplifier itself. A metal

option is added to offer a low power oscillator amplifier working in the range of 4-8MHz:

this will allow a power consumption reduction when Real Time Clock is running in

Power Down mode using as reference the on-chip main oscillator clock.

● A second on-chip oscillator amplifier circuit (32kHz) is implemented for low power

modes: it can be used to provide the reference to the Real Time Clock counter (either in

Power Down or Stand-by mode). Pin XTAL3 and XTAL4 replace a couple of VDD/VSS

pins of ST10F269.

● Possibility to re-program internal XBUS chip select window characteristics (XRAM2 and

XFLASH address window) is added.

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